Glad you gave those who are needing the visual knowledge to difficulty and the expected time that it takes to do this injector replacement job. One more big issue that I e found with these trucks is that you also may notice the abs and parking brake indicator lights come on and a DTC code be given for anti lock braking system fault detection, the simple fix to this issue is literally just an incorrect bolt used from factory that doesn’t provide the proper grounding as needed to the frame just underneath the drivers side area near where the body mounts to the chassis. Get a new bolt of better metal that will allow for better flow of grounding to the chassis and it will fully eliminate your abs/parking brake indicator staying on issue and trouble code to ever coming up again.
Just want to say you gained a lifelong subscriber today. I just purchased my first LB7 and this is what I hear the first thing I'll have to do. Thank you for the advice and help
Great video Rich- Your a great mechanic and even better Teacher- It’s one thing to have the knowledge, Another to be able to teach others. Keep em coming!
03 Silverado 350K miles and going strong. Only replaced 1 set of glow plugs and on my 2nd set of injectors. This time I put in a Air Dog lift pump and balance rates have stayed in check so far. Everything else is original. Love your videos. Keep up the good work.
I have an 04 Lb7 and I’ve been dreading the day I have to take it to a shop, but honestly after watching this, it seems much easier than I thought, Just time consuming is all, so I think I’ll be doin an injector swap myself, thanks rich! Love your vids 👍🏼
Twoleggedkumulava glad you kept it together man, trucks are replaceable, and sounds like you are still enjoying working on diesels ! Lesser men would crack from the depression. That’s bad ass dude. 💯💯 you plan on finding another dmax and building it in the future ?
As a disabled ex ford dealer mechanic when I did my first set on a 2003 Duramax I was able to do the injectors, Glow plugs, fuel pump, fuel lines and water pump started on a Saturday afternoon and finished up mid day Sunday with only hand tools in my driveway. It is a job but not a hard one. Watch a lot of UA-cam videos to see how every one dose it and you will have a few options on how to handle the Issues that comes up. My only real issue was pulling the glow plugs I think they were Original (I had just purchased the truck)
Rich there's a test port for the injection system up front by the alternator. If you prime with the hand pump and bleed all the air out thru that port it'll fire up first try no long crank. Just figured I'd say
Works great when you’re stranded on the side of the road out of fuel but you have fuel in the back and you wanted to see how many km you get out of a tank of fuel
295,000 on my 02 duramax now. On second set of injectors that were done before I got it but no major problems other than all of the metal rotting away from living in Massachusetts salt land. I’ve replaced, all body panels, all lines, front end and replaced all of the rear frame cross braces. She’s a beast now
Riding With The Reid's yes it would have been cheaper lol. I underestimated the amount of money that project was gonna take. Oh well, I have a truck that I’ve completely gone through now .
Good video as always. I’ve only done duramax injectors on a Matco 5500 tool truck with dual alternators and ac compressors. You gm guys are definitely dedicated.
When I did my injectors last time, reading from the forums gave me a bunch of extra good advice. Like, putting a dab of RTV around the high pressure line that goes to the injector itself. A lot of gunk and get down there over time and I thought it was worth while. Also, given your location Rich, it probably would have been a good idea to change the lines with new ones. But, I'm assuming there was a budget to meet with this. Particularly on an LB7, more so I'd say than on other Duramax generations, fuel filtration is paramount, a lift pump is great for these trucks just for the filtration alone. Along with a CAT filter adapter, you'll have some long lasting injectors.
While I agree adding sealant around the top of the injector connections will help prevent rust from forming and dropping into the injectors next go around, I’m beginning to wonder if it’s worthwhile since most times the only reason those fittings are coming off is to R&R injectors and anything that drops into the screen will need to be addressed when the cores go back for rebuilding. OK, I put silicon around mine too. 😀 Also agree on new HP lines. I notice Rich left the rail connections open during much of the job and as you noted, debris that’s not even visible can do a number on the injectors.
Hey rich thanks for mentioning that company name you bought the injectors from. Im looking for injectors right now for my 05 common rail. Not gonna lie i think my heart skipped a beat when the dealer told me the price. This guy canadian diesel pro has awesome prices. Thanks again bud.
I'm a mechanic and really only work on gas vehicles but now that I'm watching you do all this stuff on diesels and I'm wanting an lb7 and I'm wanting to know how to do all this work on the engine before I go spend the money then something goes wrong and dont know how to do it then have to pay someone else to do it. Your vids are amazing as well love watching them I'm learning alot about diesels watching you
So glad to see someone using RTV the CORRECT way! I hate when i see people just glob a bunch on and the tighten shit down it's intended purpose is to "Rubberize" then tighten stuff Down. Great work Deboss!
WOW! Finally an informative, to the point, how to video with a few tips and tricks to make my life easier. I really appreciate your recommended place to buy them from too. I can’t afford the big name suppliers and really can’t afford to buy junk injectors and have to do this job again right away. So thank you for that. Almost all the videos I’ve seen on you tube seem like they guy making the video has no clue what he’s doing. But that doesn’t stop him from being very confident and over explain how to do it wrong with his cheap (brand new) tools that he doesn’t know how to use. Lol anyway, thank you for posting this video and sharing you experience. 👍
Also, I’m worried it could also be that my injector pump is the culprit. The issue I’m having is my truck is filling my crank case very quickly with diesel. It pours out my over flow tubes like crazy and covers under my truck and the poor person that is driving behind me’s windshield. It’s really bad, like fills my crank case with diesel in just a couple hundred miles. I’m changing my oil about 5 times a week. And it fills up a 5 gallon bucket every time. Do you know of anyway to check the injector pump to see if it has a bad seal or something? Im guessing it would be the seal on the input shaft? It lacks a little power when towing and is hard to start only when it’s hot. And of course it has very low oil pressure once it fills up with diesel. Any help on how to check that would be great. Thank you for your time.
The lb7 is a great engine. Very reliable and much simpler design then the later models. Iv’e never waited to torque down the upper rocker cover. Never had one leak yet. Also the rocker cover bolts and the injector return bolts like to strip out. Arp makes nice replacement rocker cover bolts and merchant automotive makes much better return line bolts. Merchant is an awesome source for parts and info for duramax’s.
This is why I love my 93 idi cuz there’s no stupid wiring, electronic injectors, IP controller none of that crap. Had a 95 & was constantly pulling off the valve covers cuz I was 17 at the time & Powerstroke injectors are expensive also while it’s got a blown head gasket, so while it was running I sold it & got a 93 idi that I drive now.
Exactly , used to own an Ford idi it was bulletproof , I'm driving a 12 valve 5 speed no electronic crap for me . You can pump dirty water through those mechanical injectors .
I bought brand new Bosch injectors for my LB7. Been sandbagging putting them in. Helpful vid. Gonna kit the turbo same time. 250k miles and 4th injector been bad about 100k. Not making oil. Just smokes when idled in traffic for too long. Injector cleaner actually helped, from massive plume to zero after a 5 minute idle. But they still smoke occasionally when stuck in traffic. % are all good and close and low. Hope I didn’t buy new injectors for nothing.
Rich try the snap on digital torque wrench’s. They due angles inch metric. They vibrate and beep. Also they are swivel head. They make life so much better easier.
I've got a 2002 lb7 that was given to me by a friend who knew I needed a pickup to haul wood. Everything works on it except it needs injectors but I figure after I spend the money on S&S sac style injectors I should never have to worry about them again and will be way ahead.
Rich, well before this video I bought an 03 LB7 with 200k on the clock and very bad injectors. I replaced them myself learning as I go, following old timer advice and torque specs carefully. I set the valves while I was there and it fired up ran great, but it had a light haze out the tailpipe. It had fresh oil and a new fuel filter. I had my new injectors tested and they were good. The oil pressure sits at 14 psi when warm, close to red. Sry for the long comment, I was hoping to get your opinion on what you think might be wrong Thanks
We do cups on a situational basis on lb7’s. If the cups are leaking coolant then do them. When you’re changing the injectors if one cup lifts up or comes out with the injector then do that cup.
What about the head gasket issues. Then the overheating with the lly. Then the emissions regen stuff with the lmm Where are you located do you do work for other people
i done 4 of those engines now... the only thing that you did not mention is that you cleaned the tubes ( they get rusty and the rust falls down in to the injectors when removing them or putting new ones in) i go all in and do injectors and tubes cause when your in this deep in an LB7.. it not time to cheap out
Crazy how this job (& the power difference) makes the value of the LB7 trucks close to half the price of LBZ trucks! I'm going to upgrade my Chevy 1500 to a Diesel and have been going back and forth between Manual Cummins, Duramax or 7.3 PSD. I actually upgraded a 4L65E (used $400) with a trans-go kit and swapped into my truck faster and cheaper than the injector job in the LBZ!
Great video, I dreaded the day mine would need injectors and now it’s here. Started smoking at idle, tried all the injector cleaners that you dump into tank. Had a quote over phone to replace with new injectors 6K, sound right?
Hey sir, I recently found your videos and loving them. Good work. Been looking at upgrading to an older diesel and probably going to pick up an LB7 (really wish these older Chevy's had a 6 cylinder cummins, but oh well). Anyway, I see people talking about how their newer injectors would go bad after a short time, some people say 70k or 80k. Shouldn't they last longer though? I know bosch had a redesigned one, so maybe that fixes it all.
Man it's crazy how truck prices have skyrocketed! All these fan bois building trucks all show, no go ruin it for the average blue collar guy who wants to buy a decent used truck!
I live in Texas couldn't agree more. Basic 15 year old Silverado gas v8 with 200k set me back as much as a 2008 Lexus with half the miles. And the Lexus cost like 50g new. Sucks if you're on a budget but actually need a truck to work...
@@JamesLee-oe7mt It's ridiculous man! I really want a good used truck for future endeavors but as the sole provider for a family of 5, a truck note isn't a option! I'm mechanically inclined but these guys want $27,000 for a 2007 Ram 3500 with head gasket issues! Not this guy!
@@shaunhuckabee5904 If you absolutely need a pickup this won't work, but if you're good with an SUV then I say get a diesel ML 320 CDI. Mercedes actually builds extremely reliable diesels, and the OM642 engine is a tank. Its worse issue is the copper fuel injector o-rings failing after some time, but if you're mechanically inclined all 6 o-rings can be replaced with all related bits and bobs for 50$. It's a small engine but it pulls like a locomotive.
Only thing I saw that I would have done different was those high pressure fuel lines to each injector should have been replaced. It looked like you reused the old lines. I learned the hard way and reused the old lines the first two injector replacements within 60,000 miles. On the third set I replaced all 8 lines for about $600.
I was told from a few different mechanics and injector shops including industrial injection where I purchased my last two sets of injectors from that no matter how well you clean them, small fragments of metal can continue to pass through the high pressure system and cause damage. For $600 I’d rather be extra safe and install all 8 new lines with 8 new injectors. I still didn’t have luck even on the third set after 30,000 miles number 7 started having issues so I sold the truck. First set was replaced at 98,000 miles, second set at 140,000 miles and third set at 190,000 miles. At 220,000 miles number 7 was bad balance rate and truck was hazing bad so I was done spending money on injector issues and sold it
B&K Excavating LLC Mechanics are trained to sell you parts and labor. It’s how we pay bills. Most don’t own a sonic cleaner, or are too lazy too clean them.. lb7 lines are high quality and totally reusable. But if you have the money to burn it’s always nice to have new.
B&K Excavating LLC and that sucks you had issues like that with your truck. After owning and daily driving two duramax trucks for the last 13+ years (01’ lb7 , 06’ lbz) I can honestly say that it’s all about filtration and fuel additives with these trucks, if you don’t want a haze. If you want the injectors to last you must run a lubricity addictive and keep the filter changed regular with a tp3012 and watch where you fill up, many many lb7 forums topics have been started with “hazing after fill up” at a shit fuel station. I’ve fixed many hazing issues with a heavy heavy dose of power service mixed with tcw3 and a filter change afterwards.. if one can keep them clean they will last. My lb7 is on its second set with 270k miles and does not haze at idle.
Fau Q Power service and tcw3 two stroke outboard oil mixed together, Use 1/4 quart of tcw3 every fill up. Super tech sells it by the gallon at Walmart for $13. Mix it well with 1/2 quart or more of Power service. That part is key. Dump it in before you fill up with shitty #2 diesel lol.., lb7’s love it.
Say you have a southern truck, or western for you maybe? Something rust free. Would you then pull the cab for best access… or is this really a couple hour job for you? I find that rear bolt on the driver’s side valve cover is a real bear. I’ve done pushrods with the cab on, so I suppose I can do injectors too? Would it be of any benefit to lift the cab just a couple inches?
Question Rich?? Injectors are 6 months old and oil and fuel mixing again. Not skipping but I'm questioning the sleeves underneath. Any thoughts would be appreciated.
Hey that intake heater controller module near the fire wall on the gmc I'm trying to figure out where the ground white goes too i hooked all three wires right but I out have a black wire left which is the 4th black wire I forgot where it bolts too it's an 2003 gmc 6.6 diesel I did the injectors
Hello Deboss Garage how much time should i allow myself to do injectors on my "03 LB7 ? as i need to do them soon I am mechanically inclined but never have done these injectors before thanks , great video .
On those bolts with the f'ed sockets, once you do get them out, do you replace with new? I mean you know the chances are you will be back to that engine at some point...don't know if its a bad habit or not, I've sort of got used to throwing them as far as possible to force the replacement...start to twitch just thinking of LS exhaust manifold bolts snapping off...
Could a bad injector lead to low compression in a cylinder? Along with extra fuel in the crank case …it has a whole bunch of blow by all of a sudden. Thanks
Just picked up a O2 LB7 with 250 K on it. Was running great, started smoking at idle and cruising speed badly, Knocks at idle a bit too. Idle won’t stay consistent and all balance rates are at zero. Command rates for one, two, three and sevenarezero arrest jump around, injectors the only thing it could be? Thanks in advance
Have a question have a 2002 gmc 3500 diesel van 340,000km runs and knocks at idle and sputters and hesitates when put in drive. Put back in park it idles really low and knocks hit gas idles back up but rough idle up van runs and sounds great only at idle and noticed she looses power while driving and hesitates. No engine codes at all when scanned. But white black smoke while under load. I’m stumped weather I need a injector job or FPR replacement.
hi,i found a nice clean ´`2 2500 4x4 truck with 380k km,injectrors were done at 340k and all normal maintaince,how much is too much kilometers on those engines ? does it have some life left you think? thank you for any answers!
PLEASE HELP! Any advice on how to get stuck torsion bars out on my 1 ton sierra? Truck originally came from Canada so I figure you'd deal with the same sort of stuck. Have tried heat, sledge hammer, different penetrating fluids and air hammer. All to no avail. Any ideas appreciated! Thanks.
Rich, what's your thoughts on duramax not using a lift pump? Im not sold on the cp3 on my lbz sucking fuel over 20 feet through a filter. Does that shorten it's life? I think a frame mounted fass pump with its spin off filters that contantly circulates the tank would be sweet but its a good chunk of money.
When I did my injectors last time I installed a lift pump as well. I really got it as extra filtration for the fuel and it'll just make the injectors last longer. The added bonus it has is it alleviates strain on the cp3.
I put an air dog on my lb7 for the added filtration, the air removal aspect, and the lessen’d strain and starvation of the cp3. Ive seen cp3’s fail from fuel starvation on trucks that guys throw huge tunes on but never bother to put a lift pump on it. Its a good chunk of money but it is cheaper and much easier to install then a cp3. Also can help prolong injector life.
Can you replace the head studs without taking off the heads ? My head gaskets are not blown but I want ARP studs on mine while a mechanic is replacing my injecters.
Hey man I need help I have an 03 chev c4500 with an Isuzu 6.6 engine and I need help with the injectors I have the new ones in hand but I need help with pulling the top of the enonge apart and it’s half way under my trucks cab so what do I do?
The only issue with mine was the factory cp3 would not restart after hot. Had like 80k on it. New Bosh unit it’s been flawless. Great trucks last forever if you take care of it
A guy up the road from me is parting out an lb7 gmc, i wanted to maybe get it for a swap but should i wait and try to get an lly or maybe an lbz instead to avoid these issues?
My LB7 sometimes starts hard and with white smoke, but when it cranks forever if I just prime it a bunch it will start right up. Sometimes it’ll cough a bit going slow. The thing only has 200k km, so you think the injectors are gone? Seems like they are but it seems a little early at 200k, no? Thanks
Hey, Rich, love the videos man. Do you have any that address the terrible IFS steering and suspension that has plagued these trucks pretty much since it was introduced in 1988?
Have you looked at the Cummins Achates opposed piston engine? According to the information, long stroke to bore ratio equates to much improved efficiency. Two cranks minimize piston speed associated with the long stoke. I remember the Nebraska Tractor Test data seemed to always favor the old John Deere two cylinder diesels for horse power hours per gallon. This is a really old engine design, the British had an OPOC engine in a ship back in the early 1900's. You can see the British engine on UA-cam videos, it is in a Museum......but today again it is new and wonderful in a pickup.....
It's a crappy engine to work on because V8 diesels are crammed inside the engine bay of round body trucks. If you really want an LB7, take it out of a wrecked truck, and put it inside an old square body truck that has a massive engine bay. Keep the damn thing stock and don't crank up the fuel sky high, and you'll have a truck that you'll love forever.
@@DEBOSSGARAGE Have you seen how the Cummins ISV 5.0 is mounted in the Titan XD? I don't see how you'd be able to work on that thing without removing the fenders and subframe.
@@TRX450RVlogger There's nothing homosexual about the brand Cummins, if you wanna poke fun at brands, you can go fuck off to some distant corner of the planet. Because you just sound like an asswipe otherwise.
All deisel s are junk, the gas motors now come with more and torque plus fuel is cheaper, iespecially ford with there new fuel systems suck most of all, better have a good check book, im going gas
@DEBOSS GARAGE .nice vids mate! was thinking to get a 2003 silverado duramax 6.6L .around how many miles/kms are the injectors usually failing?seems like a must do on this engine(?)thanks!
Glad you gave those who are needing the visual knowledge to difficulty and the expected time that it takes to do this injector replacement job. One more big issue that I e found with these trucks is that you also may notice the abs and parking brake indicator lights come on and a DTC code be given for anti lock braking system fault detection, the simple fix to this issue is literally just an incorrect bolt used from factory that doesn’t provide the proper grounding as needed to the frame just underneath the drivers side area near where the body mounts to the chassis. Get a new bolt of better metal that will allow for better flow of grounding to the chassis and it will fully eliminate your abs/parking brake indicator staying on issue and trouble code to ever coming up again.
This is one of the best LB7 injector replacement videos on the internet. Thank you!
Just want to say you gained a lifelong subscriber today. I just purchased my first LB7 and this is what I hear the first thing I'll have to do. Thank you for the advice and help
Great video Rich-
Your a great mechanic and even better
Teacher-
It’s one thing to have the knowledge,
Another to be able to teach others.
Keep em coming!
He's the one in a million 👍
Right
03 Silverado 350K miles and going strong. Only replaced 1 set of glow plugs and on my 2nd set of injectors. This time I put in a Air Dog lift pump and balance rates have stayed in check so far. Everything else is original. Love your videos. Keep up the good work.
I have an 04 Lb7 and I’ve been dreading the day I have to take it to a shop, but honestly after watching this, it seems much easier than I thought, Just time consuming is all, so I think I’ll be doin an injector swap myself, thanks rich! Love your vids 👍🏼
Sam A it’s not bad at all. Just take your time.
Nothing is hard. Some things just take longer to repair than others.
Twoleggedkumulava 01-04 lb7. 04.5=lly.
Twoleggedkumulava glad you kept it together man, trucks are replaceable, and sounds like you are still enjoying working on diesels ! Lesser men would crack from the depression. That’s bad ass dude. 💯💯 you plan on finding another dmax and building it in the future ?
As a disabled ex ford dealer mechanic when I did my first set on a 2003 Duramax I was able to do the injectors, Glow plugs, fuel pump, fuel lines and water pump started on a Saturday afternoon and finished up mid day Sunday with only hand tools in my driveway. It is a job but not a hard one. Watch a lot of UA-cam videos to see how every one dose it and you will have a few options on how to handle the Issues that comes up. My only real issue was pulling the glow plugs I think they were Original (I had just purchased the truck)
How do you still only have under 200k subs?? It's such a good channel!
Rich there's a test port for the injection system up front by the alternator. If you prime with the hand pump and bleed all the air out thru that port it'll fire up first try no long crank. Just figured I'd say
Thanks budd. Learn something new everyday!
@@DEBOSSGARAGE no prob man helping others is what it's about
Works great when you’re stranded on the side of the road out of fuel but you have fuel in the back and you wanted to see how many km you get out of a tank of fuel
Makes no real difference bleeding it their besides it getting diesel all over the belt and pulleys, after having a few noisy belt come backs i learned
@@DirtyDanRacimg holding a catch cup isn't that hard
Watched Rich for a year wrenching on diesels
..... now I own one .... blaming it all on Rich!
295,000 on my 02 duramax now. On second set of injectors that were done before I got it but no major problems other than all of the metal rotting away from living in Massachusetts salt land. I’ve replaced, all body panels, all lines, front end and replaced all of the rear frame cross braces. She’s a beast now
Wouldn't cost the same to buy a vehicle somewhere else that isn't all rotten and bring it home??
Riding With The Reid's yes it would have been cheaper lol. I underestimated the amount of money that project was gonna take. Oh well, I have a truck that I’ve completely gone through now .
I also have an 02 with 280k mikes but haven’t done injectors since the recall. Crossing my fingers.
@@gchris1642 just a matter of time.
I also have an 02 chevy duramax 400k still doing good bro I'm scared now after watching those videos lol
Good video as always. I’ve only done duramax injectors on a Matco 5500 tool truck with dual alternators and ac compressors. You gm guys are definitely dedicated.
Never thought of that sequence when using silicone. The bit about cinching the bolts down, waiting an hour then torquing down. Thanks Rich!
FEASTJAPAN if you ever read the instructions on the tube of silicone you would know this...
When I did my injectors last time, reading from the forums gave me a bunch of extra good advice. Like, putting a dab of RTV around the high pressure line that goes to the injector itself. A lot of gunk and get down there over time and I thought it was worth while. Also, given your location Rich, it probably would have been a good idea to change the lines with new ones. But, I'm assuming there was a budget to meet with this.
Particularly on an LB7, more so I'd say than on other Duramax generations, fuel filtration is paramount, a lift pump is great for these trucks just for the filtration alone. Along with a CAT filter adapter, you'll have some long lasting injectors.
While I agree adding sealant around the top of the injector connections will help prevent rust from forming and dropping into the injectors next go around, I’m beginning to wonder if it’s worthwhile since most times the only reason those fittings are coming off is to R&R injectors and anything that drops into the screen will need to be addressed when the cores go back for rebuilding. OK, I put silicon around mine too. 😀
Also agree on new HP lines. I notice Rich left the rail connections open during much of the job and as you noted, debris that’s not even visible can do a number on the injectors.
Hey rich thanks for mentioning that company name you bought the injectors from. Im looking for injectors right now for my 05 common rail. Not gonna lie i think my heart skipped a beat when the dealer told me the price. This guy canadian diesel pro has awesome prices. Thanks again bud.
Tell him I sent you!
Yeah i told him i seen your video. Thanks again man i found some cheap guys in the U.S. but after the conversion he still beats them.
Great video, thanks for posting. Especially the tip about the copper gasket and the coolant vent.
I'm a mechanic and really only work on gas vehicles but now that I'm watching you do all this stuff on diesels and I'm wanting an lb7 and I'm wanting to know how to do all this work on the engine before I go spend the money then something goes wrong and dont know how to do it then have to pay someone else to do it. Your vids are amazing as well love watching them I'm learning alot about diesels watching you
Thanks. That's why we do it!
Rich mumbles torque specs in his sleep.. Zzzz ..60 in-lbs..zzz.. 89 in-lbs..zzzZ..
Thought it would be more like ''UGGA DUUUGGA. UGGAAAAA DUUUUUUGGA...'
Malcolm Young come on now you just killed the joke....
How do you know?
Great injector work shown on the ol duracrap Rich, thank you.
So glad to see someone using RTV the CORRECT way! I hate when i see people just glob a bunch on and the tighten shit down it's intended purpose is to "Rubberize" then tighten stuff Down. Great work Deboss!
TRX VLOGGER do you know what RTV stands for????
WOW! Finally an informative, to the point, how to video with a few tips and tricks to make my life easier. I really appreciate your recommended place to buy them from too. I can’t afford the big name suppliers and really can’t afford to buy junk injectors and have to do this job again right away. So thank you for that. Almost all the videos I’ve seen on you tube seem like they guy making the video has no clue what he’s doing. But that doesn’t stop him from being very confident and over explain how to do it wrong with his cheap (brand new) tools that he doesn’t know how to use. Lol anyway, thank you for posting this video and sharing you experience. 👍
Also, I’m worried it could also be that my injector pump is the culprit. The issue I’m having is my truck is filling my crank case very quickly with diesel. It pours out my over flow tubes like crazy and covers under my truck and the poor person that is driving behind me’s windshield. It’s really bad, like fills my crank case with diesel in just a couple hundred miles. I’m changing my oil about 5 times a week. And it fills up a 5 gallon bucket every time. Do you know of anyway to check the injector pump to see if it has a bad seal or something? Im guessing it would be the seal on the input shaft? It lacks a little power when towing and is hard to start only when it’s hot. And of course it has very low oil pressure once it fills up with diesel. Any help on how to check that would be great. Thank you for your time.
The lb7 is a great engine. Very reliable and much simpler design then the later models. Iv’e never waited to torque down the upper rocker cover. Never had one leak yet. Also the rocker cover bolts and the injector return bolts like to strip out. Arp makes nice replacement rocker cover bolts and merchant automotive makes much better return line bolts. Merchant is an awesome source for parts and info for duramax’s.
This is why I love my 93 idi cuz there’s no stupid wiring, electronic injectors, IP controller none of that crap. Had a 95 & was constantly pulling off the valve covers cuz I was 17 at the time & Powerstroke injectors are expensive also while it’s got a blown head gasket, so while it was running I sold it & got a 93 idi that I drive now.
Exactly , used to own an Ford idi it was bulletproof , I'm driving a 12 valve 5 speed no electronic crap for me . You can pump dirty water through those mechanical injectors .
That's the best sound I heard last time I changed my injectors
I bought brand new Bosch injectors for my LB7. Been sandbagging putting them in. Helpful vid. Gonna kit the turbo same time. 250k miles and 4th injector been bad about 100k. Not making oil. Just smokes when idled in traffic for too long. Injector cleaner actually helped, from massive plume to zero after a 5 minute idle. But they still smoke occasionally when stuck in traffic. % are all good and close and low. Hope I didn’t buy new injectors for nothing.
Rich try the snap on digital torque wrench’s. They due angles inch metric. They vibrate and beep. Also they are swivel head. They make life so much better easier.
Ram_Diesel_Power only $799 please
You lost me at “snap on”
799 freedom bucks = 1100 Canadian pesos
Eric O (South Main Auto) uses those, they look awesome.
I’ve had mine ten years and when I checked calibration it was still perfect. You get what you pay for
I remember you asking about these engine's and I said they are alot more simple then people make them out to be not near the head ache people claimed.
I've got a 2002 lb7 that was given to me by a friend who knew I needed a pickup to haul wood. Everything works on it except it needs injectors but I figure after I spend the money on S&S sac style injectors I should never have to worry about them again and will be way ahead.
at how many miles u had to do them pls?
Rich, well before this video I bought an 03 LB7 with 200k on the clock and very bad injectors.
I replaced them myself learning as I go, following old timer advice and torque specs carefully. I set the valves while I was there and it fired up ran great, but it had a light haze out the tailpipe. It had fresh oil and a new fuel filter. I had my new injectors tested and they were good. The oil pressure sits at 14 psi when warm, close to red.
Sry for the long comment, I was hoping to get your opinion on what you think might be wrong
Thanks
How much did you spend on injectors? Check your balance rates with a scanner
@@DEBOSSGARAGE Around how many miles the injector usually fail pls?thanx!
Nothing but respect for Northern mechanics.
Getting ready to do these myself on an 02.
When’s the ideal time to do cups as well?
We do cups on a situational basis on lb7’s. If the cups are leaking coolant then do them. When you’re changing the injectors if one cup lifts up or comes out with the injector then do that cup.
Thanks man
If the injector cups aren’t disturbed, do you just leave them be, or would you recommend pulling, cleaning and new o rings and loctite?
What about the head gasket issues. Then the overheating with the lly. Then the emissions regen stuff with the lmm
Where are you located do you do work for other people
i done 4 of those engines now... the only thing that you did not mention is that you cleaned the tubes ( they get rusty and the rust falls down in to the injectors when removing them or putting new ones in) i go all in and do injectors and tubes cause when your in this deep in an LB7.. it not time to cheap out
Crazy how this job (& the power difference) makes the value of the LB7 trucks close to half the price of LBZ trucks! I'm going to upgrade my Chevy 1500 to a Diesel and have been going back and forth between Manual Cummins, Duramax or 7.3 PSD. I actually upgraded a 4L65E (used $400) with a trans-go kit and swapped into my truck faster and cheaper than the injector job in the LBZ!
I like these type of videos. thanks for making them.
Looking at other engine makes me love my Cummins so much
Great video, I dreaded the day mine would need injectors and now it’s here. Started smoking at idle, tried all the injector cleaners that you dump into tank. Had a quote over phone to replace with new injectors 6K, sound right?
Thanks for the video! Where did you say you bought the injectors?
Hey sir, I recently found your videos and loving them. Good work. Been looking at upgrading to an older diesel and probably going to pick up an LB7 (really wish these older Chevy's had a 6 cylinder cummins, but oh well). Anyway, I see people talking about how their newer injectors would go bad after a short time, some people say 70k or 80k. Shouldn't they last longer though? I know bosch had a redesigned one, so maybe that fixes it all.
Best video I’ve seen yet!
Man it's crazy how truck prices have skyrocketed! All these fan bois building trucks all show, no go ruin it for the average blue collar guy who wants to buy a decent used truck!
I have no interest in buying mainstream diesel trucks. But guy do I feel you. Even nicer IdI fords people are asking outrageous prices.
I live in Texas couldn't agree more. Basic 15 year old Silverado gas v8 with 200k set me back as much as a 2008 Lexus with half the miles. And the Lexus cost like 50g new. Sucks if you're on a budget but actually need a truck to work...
@@JamesLee-oe7mt It's ridiculous man! I really want a good used truck for future endeavors but as the sole provider for a family of 5, a truck note isn't a option! I'm mechanically inclined but these guys want $27,000 for a 2007 Ram 3500 with head gasket issues! Not this guy!
@@shaunhuckabee5904 If you absolutely need a pickup this won't work, but if you're good with an SUV then I say get a diesel ML 320 CDI. Mercedes actually builds extremely reliable diesels, and the OM642 engine is a tank. Its worse issue is the copper fuel injector o-rings failing after some time, but if you're mechanically inclined all 6 o-rings can be replaced with all related bits and bobs for 50$. It's a small engine but it pulls like a locomotive.
Is the insane prices of new trucks that's ruining the used truck market.
Only thing I saw that I would have done different was those high pressure fuel lines to each injector should have been replaced. It looked like you reused the old lines. I learned the hard way and reused the old lines the first two injector replacements within 60,000 miles. On the third set I replaced all 8 lines for about $600.
B&K Excavating LLC reusing the old lines is fine, must throughly clean them first.
I was told from a few different mechanics and injector shops including industrial injection where I purchased my last two sets of injectors from that no matter how well you clean them, small fragments of metal can continue to pass through the high pressure system and cause damage. For $600 I’d rather be extra safe and install all 8 new lines with 8 new injectors. I still didn’t have luck even on the third set after 30,000 miles number 7 started having issues so I sold the truck. First set was replaced at 98,000 miles, second set at 140,000 miles and third set at 190,000 miles. At 220,000 miles number 7 was bad balance rate and truck was hazing bad so I was done spending money on injector issues and sold it
B&K Excavating LLC Mechanics are trained to sell you parts and labor. It’s how we pay bills. Most don’t own a sonic cleaner, or are too lazy too clean them.. lb7 lines are high quality and totally reusable. But if you have the money to burn it’s always nice to have new.
B&K Excavating LLC and that sucks you had issues like that with your truck. After owning and daily driving two duramax trucks for the last 13+ years (01’ lb7 , 06’ lbz) I can honestly say that it’s all about filtration and fuel additives with these trucks, if you don’t want a haze. If you want the injectors to last you must run a lubricity addictive and keep the filter changed regular with a tp3012 and watch where you fill up, many many lb7 forums topics have been started with “hazing after fill up” at a shit fuel station. I’ve fixed many hazing issues with a heavy heavy dose of power service mixed with tcw3 and a filter change afterwards.. if one can keep them clean they will last. My lb7 is on its second set with 270k miles and does not haze at idle.
Fau Q Power service and tcw3 two stroke outboard oil mixed together, Use 1/4 quart of tcw3 every fill up. Super tech sells it by the gallon at Walmart for $13. Mix it well with 1/2 quart or more of Power service. That part is key. Dump it in before you fill up with shitty #2 diesel lol.., lb7’s love it.
Rich your the “Charlie Daniels of the torque wrench!”⚙️🔩🔧⚒
Say you have a southern truck, or western for you maybe? Something rust free. Would you then pull the cab for best access… or is this really a couple hour job for you? I find that rear bolt on the driver’s side valve cover is a real bear. I’ve done pushrods with the cab on, so I suppose I can do injectors too? Would it be of any benefit to lift the cab just a couple inches?
This new background music is NICE
Do you have to program the ECM for the injectors?
So u don’t torque the valve covers until an hour after u put them on ?
Is it worth filling the heads of the allen bolts with copper slip or something to stop them rusting?
IIRC, I believe the LB7’s were prone to leaking head gaskets as well...although this wasn’t as big of an issue as the injectors were.
When you do injectors on an LB7, do you replace the high pressure lines?
Question Rich?? Injectors are 6 months old and oil and fuel mixing again. Not skipping but I'm questioning the sleeves underneath. Any thoughts would be appreciated.
Can the head bolts be retention ,as a very slight oil weeping from it .on my 2002 LB7 duramax
Could you make a video on replacing an injector pump for a chevy/gmc 6.5 Detroit diesel?
how did these injectors hold up from canadian diesel pro?
I’m contemplating wether I should do it on my 345k mile gmc dually. It’s either replace the injectors or sell it and buy another truck.
any reason why you didn't replace the injector cups?
How do u determine which injector is bad ? U use balance rates ?
I do have a lb7 with return line leak would you work on it?
Awesome! OT: Is it a waste of effort to bore/stroke a Cummins 12v? Can it be done without sacrificing longevity?
Hey that intake heater controller module near the fire wall on the gmc I'm trying to figure out where the ground white goes too i hooked all three wires right but I out have a black wire left which is the 4th black wire I forgot where it bolts too it's an 2003 gmc 6.6 diesel I did the injectors
Rich, are all of Canadian Diesel pro's LB7 injector options good?
What numbers should I see on a scanner to know what injector is good and what one is bad on the balance rates???
Love my 270xxx mile lb7, nothing but good to me.
Is this something I can do as a novice at home? Also what is a typical mechanic bil for this?
Do you gain my power if you upgrade your injectors to a higher flow set.
Hello Deboss Garage how much time should i allow myself to do injectors on my "03 LB7 ? as i need to do them soon I am mechanically inclined but never have done these injectors before thanks , great video .
12 hrs or so.
I have an lb7 any oil pan is full of diesel fuel what would you think the problem with be
Injectors leaking
On those bolts with the f'ed sockets, once you do get them out, do you replace with new?
I mean you know the chances are you will be back to that engine at some point...don't know if its a bad habit or not, I've sort of got used to throwing them as far as possible to force the replacement...start to twitch just thinking of LS exhaust manifold bolts snapping off...
Could a bad injector lead to low compression in a cylinder? Along with extra fuel in the crank case …it has a whole bunch of blow by all of a sudden. Thanks
Should i go 2nd gen p-pump or 3rd gen common rail? And why?
Hey Rich, how long does this take to do. Thanks
Just picked up a O2 LB7 with 250 K on it. Was running great, started smoking at idle and cruising speed badly, Knocks at idle a bit too. Idle won’t stay consistent and all balance rates are at zero. Command rates for one, two, three and sevenarezero arrest jump around, injectors the only thing it could be? Thanks in advance
Have a question have a 2002 gmc 3500 diesel van 340,000km runs and knocks at idle and sputters and hesitates when put in drive. Put back in park it idles really low and knocks hit gas idles back up but rough idle up van runs and sounds great only at idle and noticed she looses power while driving and hesitates. No engine codes at all when scanned. But white black smoke while under load. I’m stumped weather I need a injector job or FPR replacement.
hi,i found a nice clean ´`2 2500 4x4 truck with 380k km,injectrors were done at 340k and all normal maintaince,how much is too much kilometers on those engines ? does it have some life left you think?
thank you for any answers!
Great vid, wonder if not adjusting the valves was not in the customers budget.
It was done in a separate video
Where did you get them again
PLEASE HELP! Any advice on how to get stuck torsion bars out on my 1 ton sierra? Truck originally came from Canada so I figure you'd deal with the same sort of stuck. Have tried heat, sledge hammer, different penetrating fluids and air hammer. All to no avail. Any ideas appreciated! Thanks.
Rich, what's your thoughts on duramax not using a lift pump? Im not sold on the cp3 on my lbz sucking fuel over 20 feet through a filter. Does that shorten it's life? I think a frame mounted fass pump with its spin off filters that contantly circulates the tank would be sweet but its a good chunk of money.
Yes, that's what takes out the cp3, the starving effect. A fas will definitely prolong its life and much easier to install then a new cp3
Thank you for the reply
When I did my injectors last time I installed a lift pump as well. I really got it as extra filtration for the fuel and it'll just make the injectors last longer. The added bonus it has is it alleviates strain on the cp3.
@@tt7hvn so any noticable difference in anything?
I put an air dog on my lb7 for the added filtration, the air removal aspect, and the lessen’d strain and starvation of the cp3. Ive seen cp3’s fail from fuel starvation on trucks that guys throw huge tunes on but never bother to put a lift pump on it. Its a good chunk of money but it is cheaper and much easier to install then a cp3. Also can help prolong injector life.
Do the numbers on the injectors have to go a certain way
Can you replace the head studs without taking off the heads ?
My head gaskets are not blown but I want ARP studs on mine while a mechanic is replacing my injecters.
Great quick informative video.
Love the engine builds
Hey deboss is it bad to run furnace oil in a diesel pickup?
Yes. Crude oil gets refined. Top fuels first. Diesel is one of the later things but furnace oil is the bottom of the barrel.
@@DEBOSSGARAGE yeah i kinda figured it would be like that, pretty tempting tho when its almost half the price of diesel tho lol
Rich I was wondering what's your opinion on lift kits? (Disregard if you've addressed this somewhere else)
Hey man I need help I have an 03 chev c4500 with an Isuzu 6.6 engine and I need help with the injectors I have the new ones in hand but I need help with pulling the top of the enonge apart and it’s half way under my trucks cab so what do I do?
The only issue with mine was the factory cp3 would not restart after hot. Had like 80k on it. New Bosh unit it’s been flawless. Great trucks last forever if you take care of it
Great Vid! Your toughts so far on those reman injectors ? I know that canadian diesel pro sell relatively cheap reman ones
A guy up the road from me is parting out an lb7 gmc, i wanted to maybe get it for a swap but should i wait and try to get an lly or maybe an lbz instead to avoid these issues?
If the price is right, I would buy it
My LB7 sometimes starts hard and with white smoke, but when it cranks forever if I just prime it a bunch it will start right up. Sometimes it’ll cough a bit going slow. The thing only has 200k km, so you think the injectors are gone? Seems like they are but it seems a little early at 200k, no? Thanks
Look into rebuilding your fuel filter head under the hood. Im guessing since you're having to prime it you might have a bad seal.
Any LMM injector replacement's in the future?
Have you rebuilt injectors before?
Thanks for the vid Rich. What do you use to check the injector balance rates
.
Nice truck, but Id go Dodge Ram first - Cummins is easier to work on.
I have a 02 Duramex and change the injection pump and the ficm and won’t start any idea what it could be? Help please
Hey, Rich, love the videos man. Do you have any that address the terrible IFS steering and suspension that has plagued these trucks pretty much since it was introduced in 1988?
How is this job on a Chevy Express or GMC Savanna?
Have you looked at the Cummins Achates opposed piston engine? According to the information, long stroke to bore ratio equates to much improved efficiency. Two cranks minimize piston speed associated with the long stoke. I remember the Nebraska Tractor Test data seemed to always favor the old John Deere two cylinder diesels for horse power hours per gallon. This is a really old engine design, the British had an OPOC engine in a ship back in the early 1900's. You can see the British engine on UA-cam videos, it is in a Museum......but today again it is new and wonderful in a pickup.....
I remember seeing plenty of these brand new as a kid.
It's a crappy engine to work on because V8 diesels are crammed inside the engine bay of round body trucks. If you really want an LB7, take it out of a wrecked truck, and put it inside an old square body truck that has a massive engine bay. Keep the damn thing stock and don't crank up the fuel sky high, and you'll have a truck that you'll love forever.
Next project truck is a duramax swapped 64 C10 tow truck on air ride
@@DEBOSSGARAGE Have you seen how the Cummins ISV 5.0 is mounted in the Titan XD? I don't see how you'd be able to work on that thing without removing the fenders and subframe.
Batojiri1 yeah of course cumin's has always been gay though, now they have them in a gay titan.
@@TRX450RVlogger There's nothing homosexual about the brand Cummins, if you wanna poke fun at brands, you can go fuck off to some distant corner of the planet. Because you just sound like an asswipe otherwise.
All deisel s are junk, the gas motors now come with more and torque plus fuel is cheaper, iespecially ford with there new fuel systems suck most of all, better have a good check book, im going gas
@DEBOSS GARAGE .nice vids mate! was thinking to get a 2003 silverado duramax 6.6L .around how many miles/kms are the injectors usually failing?seems like a must do on this engine(?)thanks!
Every 100000
Was there ever a engine block made that was used for diesel and gas applications in North America?
I don’t know about diesel and gas, but there were a lot of engines( boat,agricultural) that were made to preheat on petrol and run on paraffin !
@@ethanutter7971 He didn't mean natural gas. Gasoline. 6.2/6.5 were never gas engines and to my knowledge, no Detroit was ever gas.