@DD PN Better un-snip it when you're done then. Guy I know did that on an older truck with a buzzer and got his butt in trouble with the diesel bears because of it.
We just had a week of -40*c weather, all the deleted trucks went to work, all the non-deleted ones went to the shop. With the Cummins and bad camshafts, don't run 0w-40 or 5w-40 syn oils these engines will have failures. 15w-40 will take them to a million km. Good one Josh, stay warm.
Due to your experienced understanding, with or without being on site, your references and reference material make concepts easy to grasp and understand, however this on site format is as close to a hands on experience as possible while still conveying any theoretical concept well.
For the isx Thats “normal” I’ve seen that a ton. They have top end oiling problems Especially cold starts with no pan heater they can run for over a minute without the top end getting oil
I've seen many too and its not oil pressure issue head feed by 4 galleries. It's caused by extended oil changes that 30k bs. Fleets do this to save money and they get rid of them at 500k so next guy ends up fixing it. Seen many C15 eat cams or what about c12 and c13 oh wait they eat cams too there not in cyl head. I have c13 apart right now, 2 scored cyls, bad cam lobe and roller. 1 upper rod bearing flaking badly and other are just seeing copper slightly.
Sounds like most reman engines are becoming of low quality. Check out Indiana Diesel and Western Truck and Tractor Repair on You Tube. Both guys have had bad experiences with remans from OEMs. Check it out. You are a knowledgeable technician. Keep up the good work.
Great video 👍.. I'm primarily a engine-electronic specialist and I love my Fluke 87...Biggest recommendation I can say for the audience,is... DON'T USE CHEAP MM's...I see a lot of new techs cheap out and go with a cheap M-Meter...then,they are going crazy,because they get ghost voltage cause their meter's are not True RMS...A good meter is a must when troubleshooting anything ECU related...I also use a Klien MM2000 for the field..just as accurate as the Fluke too...great for the price too! ..
i find that sensors in their correct place will never read the ambient temp. the coolant is insulated by the engine itself. the air within the air intake is also insulated by the intake track so it will never get as cold as outside.
The closest I get to those big diesel engines is when I walk by semi's @ a truck stop! BUT, I can watch your videos forever! This video was too short! LOL.
Great video. I'm betting its a constant value in the software formula that the 3 sensors use that has been changed by someone messing with the software. I likevthe new format.
I replaced both cams in my cm870 Cummins last April, 60k miles ago. It's currently in the shop again with the #6 intake valve lobe that chunked apart. My mechanic says they have an updated cam to fix the problem with wider lobes. This of course requires replacing all 12 rocker arms with uodated ones. I'm not sure if this will solve the problem though since both cams were starting the chunk apart only 60k miles ago which is why they were replaced.
good video. My cat friend says that when he controls 55% of cat stock, he gave up on 51% that stuff will never happen or heads will roll. My cat friend also likes buddy and piper he says that for dogs they are really good.
If you ever have issues with pipe plugs and being in a tight spot. Get you a cheap set of Allen wrenches and cut the length you need off them and use that size in wrench to tighten it up. Hope that helps!
Hey I have one of those pliers cause I love knipex , but it might be the only thing that they are good for ! Besides them beautiful product...otherwise this pliers are useless !
Before I watch, my guess only from the title is low compression due to head gasket blowing because it no longer has enough liner protrusion. Had a few that would start to miss when we drove out of the warm shop into very cold weather. But, ya the list is long of possible problems. A fun guess.
I had my engine rebuilt at a certified Cat dealer and it ran great after that and never had so much boost but it had an oil leak it never had before. In fact, it never leaked before. But now when running, and if you are parked in the rain, you can see the tell tale rainbow. Don't know if the plugs shown were responsible or not.
Its just the sensors in this case. If it reads correctly when you put a new sensor in, something is wrong with the old sensors. This eliminates any issues from the wiring or the ecm.
Honda Magna V65 Chocolate cams, GM HF DOHC V6 3.6L, Chrysler Penta Star DOHC V6 3.6L, current HEMI 5.7L, et al. Metallurgy, lubrication, type of oil, change intervals, day of the week, Pink Moon, Brown Sun, pick your favorite suspect. 😂
13:00 Could get a Square bit, with a hex end, put a ratchet wrench on the hex end to tighten the oil gallery plugs. Thats what i would have done. Looks like you would have had clearance to do that on all or most of them.
Nice video, thx for sharing.. the worst no start cold start I had was on a 325 Excavator, this thing fault me a about a day and a half, I finally called my Cat guy out, he played with it for almost a day, we decided to meet back in the morning and continue on.. we got there turned it over and sure what the heck everything was showing good.. then we double checked each sensor looked them over close, the water temp sensor was showing 190 and it has not been started..it was throwing all the cold start for a loop.. changed it with out even testing it..fixed it
I've seen that many times and since there is no code people can miss it easily. Good find. Kind of like low power troubleshooting, I've seen several throttle position sensors that only go up to 50-70% with the pedal to the floor, no wonder it's low power.
I've never had good luck with Cat reman long blocks. I had reman unit not make it out of bay several times. Everything from a cam bearing destroy a cam in 5 minutes to a piston skirt coming apart in 10 minutes. Always pushed for a short block and a head if I could.
I haven't had that before, we did have a C7 long block once that didn't rotate. The crankshaft was bent somehow and would only do a half rotation, not sure how that leaves the factory.
@@AdeptApe Had a C12 rocker shaft bracket pin bore damaged and it lasted 7 miles. The bracket broke and took out the lifter, cam, and pushrod. The worse thing is it was in a diesel pusher. The second time around I put a short block and had it back running on the dyno in 5 days
Was -45 last Monday here in northern Wisconsin, C-15 acert started fine for the block heater crapping out, and half gelled fuel. Just doesn't build heat and I suspect that the diverter valve staying open. Replaced the diaphragm, coil and everything, replaced the thermostats twice over summer, still runs cold
Bahaha!!! Cold! Young fella! I run equipment like 797 and other large equipment. It was -55 degrees Celsius here last week. Try fixing things in that temp😳
Sensors can get out of calibration or just be wrong if they are poorly manufactured or older and well used and just past their time or just some other random issue with them. Some sensors can be wrong whey they are dirty, which cleaning can sometimes fix them, but a lot of the time, it is better to replace and not have to worry about it for the next ten years.
@@snoopdogie187 Not every one of them all at the same time. Either one of sensors causing the problem or harness and I would even look at engine battery supply and ground. Also look at cable jumpers for whatever reason when owners cut wire from them and put eyelets on them put them under battery cable nut cause hard to start. Even worst when ECM power and ground on same battery. Reason why Peterbilt ECM made power and ground wires into jumper cables and not on same battery too.
I love your Cat videos...better than all of the "funny cat" videos out there. (joke for those who don't get it). Again more information than I could absorb so I guess I'd better watch it again. Wow how in the world did those Cummins cam rollers get that bad. I guess the good news about that issue is as soon as you get the covers off, you can turn to your customer and say, "Here's yer problem lady". Hope you have become accustomed to the cold...THAT's COLD. Great Video Josh.
Thank you Larry, that day was so cold it was hard to deal with. I would troubleshoot for a few minutes then have to go inside for a few minutes. My hands would just get too cold.
I don't mess with diagnostics when it's below zero and windy I just throw some torpedo heat under it for awhile and take it someplace warm for a month.
Did the driver notice it on the coolant temp gauge? At my dealer the complaint is typically "engine overheating" cause the operator sees the gauge peg. We arrive and the valve cover is just warm not hot. 15 minutes later he's up and running cause we brought a sensor due to it being such a common failure in the last few years. I'm still confused as to why cat is installing the suspect sensors in BRAND NEW machines. I suppose it's a Rev 2 or 3 sensor but still has the same flaw. Keep the videos coming! I have tons of cat experience but I enjoy getting your take on things...even if you block sand a top deck for 3 hrs to replace a head gasket ;) jk lol 😆 and any other emoji that shows I'm just kidding and not a keyboard cowboy.
YAY HAUL TRUCKS! Not lol. Been doing nothing but working on them for the past few weeks. And all the snow in the bed was frozen and wouldn't dump out. Couldn't wait for the bed to warm up so I could dump it, so it sat in the shop dripping water for 3 days.
Hey I have a b model that smokes like that when she is cold, but after she gets around 160 to 170 she runs great no smoke other than normal for shifting gears. Lots of smoke all the time on the blow by all the time. Supposedly rebuild 250000 ago. Been told by every b model this is normal, just want to make sure thanks!
Sometimes your fuel can drain out of the cylinder head. I put sight glass in before head, return of head and at primary filter base. Let set over night or a day or so and check to see if fuel leaked out. If so you can put check valves in the fuel lines to prevent leaking back to tank. Looks like a brakesaver was on that jewel.
@@AdeptApe Never checked fuel psi with the sight glasses installed. But will on the next one. What if the fuel drained out the return side and the inlet showed fuel in the glass? The check valves are used in a TIB I think on a power generation. One goes in at the return filter base. The other I like to put at the fuel spliter outlet or inlet of the primary. The suction valve is a number eight and have to use reducers. You could put one on each tank, but they are pricey.
@@AdeptApe We have one a few years ago that was smoking on cylinder four. Threw EUI's at it finally pulled the cylinder head off. I guess Cat was using plasma coating when they was refurbishing cylinder heads. Anyway the stuff was breaking off and we counted 32 cracks on the bottom of the head. Wonder why now all are upgrade to new?
you want somebody to pull a head off because an injector is bad? After messing around with a sensor issue for two days that evidently didn't matter? I wish all customers were as understanding as you lol.
@@chughes44 I'm not a customer I work on my own shit bc mechanics are crooks. They will think it's this part change and and doesn't fix the problem and still charge you. He doing it the right way process of elimination not just a parts changer like you
Head gasket was leaking oil and the injector overfuelling had some washed the cylinder somewhat and caused some scoring, but thank you for your psychic input.
@@AdeptApe lol that is all information that probably should have been included in the video. The fact that i had to speculate what happened might give you some insight.
Really enjoying the videos and frequency lately, very informative. Would cat built up that long block or farmed it out to a 3rd party engine builder. I seen something similar on another channel. Basicly poor workmanship from I known name. Turns out it was built by a volumes 3rd party on there behalf. 🏴
Its funny I skipped passed the last video because of the "guy infront of white wall" kinda made it hard to stay engaged. I'd rather you record random work and just talk over it (aka called B Roll) or if you do have some footage for it that would be a bonus!
I had cat update my hydraulic hoses with covers and they didn't swap a hose with wires hanging out, instead it blew up on the 2nd job out. The they changed a fuel sending unit and it now only reads 1/2 to full and you have to guess if it's empty. Cat ain't what it used to be.
All cams are surface hardened. Some may be hardened a bit deeper, but they are all surface hardened. Some may be harder than others. To achieve the same hardness throughout is going to be ridiculously expensive... like the more than the cost of the engine expensive. Then it will crack at some point. All about ductility where you need it, and hardness where you need it .
I’ve always really liked your videos, and 👍for the new style. I too have run into disappointment in a Cat reman engine. Been a Cat fan for a long time and almost lost me over the BS with this reman. Luckily I’ve got a good dealer that stood behind it. Is Cat like other manufacturers that put their reman work out to bid?
Did you run a file on the bad cam, if it was soft, that would explain the problem, if not the cam follower was exerting excess pressure. Another cause is engine history, had the engine, some time in the past ever had a serious case of fuel-oil dilution? This is also a case where I would cut open the oil filter to see not only how much metal was in it, but also to see of the bypass was stuck open, perhaps by a metal chip.
Why not mention the fuel temp sender not reading correctly either? A trick I use for plugs like that is cut a allen key off then use a wrench open end, though those plyers do grip very well
Just curious 🤔 where u located at, u r so good at what u do and appreciate ever video and the way it looks u mostly work on cat engines how about Cummins ISX
I'm not getting it, how can 3 sensors be reading all wrong at the same time? That just seems like too much of a coincidence. Was it fixed by getting new sensors?
When I see multiple failures I pull out a wiring schematic and see if there is a common ground or power feed common to the failures. This may or may nor apply here as I have no idea which of these sensors are one wire, two wire (power and ground), or three wire (reference, ground, signal)...
@@AdeptApe I know you checked it, but first thing that comes to my mind when multiple things act up is a bad ground, and that not so nice harness repair would be a starting point... Did you swap all 3 sensors out in the end?
What would cause a a cat 2003 c-9 run hot radiator water pump and thermostat changed still runs hot after 2/3 pushes its on a d6r dozer trans and hyd staying normal cac was sent in too get pressure checked and came back good
Sorry for the beeping in the video, the key switch for this truck has a super annoying beep that I tried to minimize in the video, but is still there.
Not annoying to me... The dogs though are a different story.
@DD PN Better un-snip it when you're done then. Guy I know did that on an older truck with a buzzer and got his butt in trouble with the diesel bears because of it.
Real world problems Josh no need to apologise...
@@SOU6900 Oh. I thought he was talking about something else. Oops
Oh yeah that annoying beeping my 05 KW T800 does that till all systems are go
I really like the new style of videos that you are making.
Thank you, I'm trying to make them more entertaining and hands on, even though you aren't there with me I try to make you feel like you are.
You like the added beeping?
@@AdeptApe
Yes try making more hands-on vids. They're very informative. Particularly on the c15s and 3406e.
Thank you to the haters who said adept can’t do electrical posting str8 gold proving em wrong lol
Standard for cummins cam failure! Our junkyard builds fences from wrecked isx engines
It's nice to see a well informed tec show how to use your brain to work on mechanical issues. Any people still bitch about the labor costs.
Thank you.
Great videos, not only educational but also enjoy the humor.
Understanding how the mechanic brain approaches these problems .. VERY HELPFUL
Colin symonds from Queensland Australia I have a c16 in my 86 super liner I learn a lot from you keep up the good work col
We just had a week of -40*c weather, all the deleted trucks went to work, all the non-deleted ones went to the shop.
With the Cummins and bad camshafts, don't run 0w-40 or 5w-40 syn oils these engines will have failures. 15w-40 will take them to a million km. Good one Josh, stay warm.
15w-40 is what owners manual recommends on cummins. I use Rotella 15w-40 full synthetic and get 15000 mi. and 750 gals of diesel on every service.
Due to your experienced understanding, with or without being on site, your references and reference material make concepts easy to grasp and understand, however this on site format is as close to a hands on experience as possible while still conveying any theoretical concept well.
Somebody at assembly line had a really bad hangover that day.
Bad ass technician...needed all over the world !
he has a nice job, all we technicians have pretty good jobs.
For the isx Thats “normal” I’ve seen that a ton. They have top end oiling problems Especially cold starts with no pan heater they can run for over a minute without the top end getting oil
I've seen many too and its not oil pressure issue head feed by 4 galleries. It's caused by extended oil changes that 30k bs. Fleets do this to save money and they get rid of them at 500k so next guy ends up fixing it. Seen many C15 eat cams or what about c12 and c13 oh wait they eat cams too there not in cyl head. I have c13 apart right now, 2 scored cyls, bad cam lobe and roller. 1 upper rod bearing flaking badly and other are just seeing copper slightly.
Nice parrot wrench great tips on mech
I’m gonna put a cat in my 579 when the time comes currently running an mx13 just about 962,000 miles on it. Great vid 😎
Sounds like most reman engines are becoming of low quality. Check out Indiana Diesel and Western Truck and Tractor Repair on You Tube. Both guys have had bad experiences with remans from OEMs. Check it out. You are a knowledgeable technician. Keep up the good work.
Thank you.
Great video 👍.. I'm primarily a engine-electronic specialist and I love my Fluke 87...Biggest recommendation I can say for the audience,is... DON'T USE CHEAP MM's...I see a lot of new techs cheap out and go with a cheap M-Meter...then,they are going crazy,because they get ghost voltage cause their meter's are not True RMS...A good meter is a must when troubleshooting anything ECU related...I also use a Klien MM2000 for the field..just as accurate as the Fluke too...great for the price too! ..
Love these hands on videos. Makes me feel like I'm there doing it myself.
i find that sensors in their correct place will never read the ambient temp. the coolant is insulated by the engine itself. the air within the air intake is also insulated by the intake track so it will never get as cold as outside.
The closest I get to those big diesel engines is when I walk by semi's @ a truck stop! BUT, I can watch your videos forever! This video was too short! LOL.
Thanks Josh great work
Thank you.
Nice video Josh, you make turning wrenches a whole lot easier thank you👍🏼
I do agree about those pliers I own a pair of Dykes and they are amazing German steel
Great video. I'm betting its a constant value in the software formula that the 3 sensors use that has been changed by someone messing with the software.
I likevthe new format.
I replaced both cams in my cm870 Cummins last April, 60k miles ago. It's currently in the shop again with the #6 intake valve lobe that chunked apart. My mechanic says they have an updated cam to fix the problem with wider lobes. This of course requires replacing all 12 rocker arms with uodated ones. I'm not sure if this will solve the problem though since both cams were starting the chunk apart only 60k miles ago which is why they were replaced.
Needs a bunch of Cosby in a can sprayed into the intake. That would help the cold start! Problem fixed
Excellent video. I liked the trouble shooting that was done. Good work.👍
good video. My cat friend says that when he controls 55% of cat stock, he gave up on 51% that stuff will never happen or heads will roll. My cat friend also likes buddy and piper he says that for dogs they are really good.
We need more Cummins videos. I have moved on from the CAT 3126 and have a Cummins B6.7 in my new truck.
If you ever have issues with pipe plugs and being in a tight spot. Get you a cheap set of Allen wrenches and cut the length you need off them and use that size in wrench to tighten it up. Hope that helps!
Hey I have one of those pliers cause I love knipex , but it might be the only thing that they are good for ! Besides them beautiful product...otherwise this pliers are useless !
Fantastic video. Thank you for posting
I saw that failure on a cummins before, lack of oil in the engine and long bouts of the truck sitting at idle, were contributing factors
I think that was a Friday afternoon and had a hot date engine build. Pretty frustrating when you get someone’s hack job and you have to sort it out
Dude, this kind of content, 150k subs coming soon! You are in your zone doing the hands on videos. Thanks for sharing your knowledge!
Amazing video! I'm definitely not a mechanic but you make everything very understandable. Owning two 3126s this helps a ton, thank you!!
Thank you for the nice comment.
Love using knipex , smooth parallel jaw pliers in aircraft maintenance
Before I watch, my guess only from the title is low compression due to head gasket blowing because it no longer has enough liner protrusion. Had a few that would start to miss when we drove out of the warm shop into very cold weather. But, ya the list is long of possible problems. A fun guess.
I had my engine rebuilt at a certified Cat dealer and it ran great after that and never had so much boost but it had an oil leak it never had before. In fact, it never leaked before. But now when running, and if you are parked in the rain, you can see the tell tale rainbow. Don't know if the plugs shown were responsible or not.
Very nice content. I really enjoy your vids. Keep up the great work.
Thank you.
Sensors not reading right. possibly the battery/ECM voltage was LOW?
Its just the sensors in this case. If it reads correctly when you put a new sensor in, something is wrong with the old sensors. This eliminates any issues from the wiring or the ecm.
Cummins had a rash of “soft” cams for years.
Honda Magna V65 Chocolate cams, GM HF DOHC V6 3.6L, Chrysler Penta Star DOHC V6 3.6L, current HEMI 5.7L, et al.
Metallurgy, lubrication, type of oil, change intervals, day of the week, Pink Moon, Brown Sun, pick your favorite suspect. 😂
13:00 Could get a Square bit, with a hex end, put a ratchet wrench on the hex end to tighten the oil gallery plugs. Thats what i would have done. Looks like you would have had clearance to do that on all or most of them.
Arr thought that as well loads of room and no potential to mark the threads
Josh awesome format this time... yes there is that annoying beep in the background... but so what! I really enjoyed it!
Thank you.
On those dohc isx engines thats pretty common for the injector cam/rocker shaft to fail. I've seen it quite a few times
Well nice plyers and I think I nodded off I didn't get why the sensors were out if range oh well goodnight...
Cam lobe issues still plague the 2250 isx and even the 2350 x15's
Nice video, thx for sharing.. the worst no start cold start I had was on a 325 Excavator, this thing fault me a about a day and a half, I finally called my Cat guy out, he played with it for almost a day, we decided to meet back in the morning and continue on.. we got there turned it over and sure what the heck everything was showing good.. then we double checked each sensor looked them over close, the water temp sensor was showing 190 and it has not been started..it was throwing all the cold start for a loop.. changed it with out even testing it..fixed it
I've seen that many times and since there is no code people can miss it easily. Good find.
Kind of like low power troubleshooting, I've seen several throttle position sensors that only go up to 50-70% with the pedal to the floor, no wonder it's low power.
I've never had good luck with Cat reman long blocks. I had reman unit not make it out of bay several times. Everything from a cam bearing destroy a cam in 5 minutes to a piston skirt coming apart in 10 minutes. Always pushed for a short block and a head if I could.
I haven't had that before, we did have a C7 long block once that didn't rotate. The crankshaft was bent somehow and would only do a half rotation, not sure how that leaves the factory.
@@AdeptApe Had a C12 rocker shaft bracket pin bore damaged and it lasted 7 miles. The bracket broke and took out the lifter, cam, and pushrod. The worse thing is it was in a diesel pusher. The second time around I put a short block and had it back running on the dyno in 5 days
Was -45 last Monday here in northern Wisconsin, C-15 acert started fine for the block heater crapping out, and half gelled fuel. Just doesn't build heat and I suspect that the diverter valve staying open. Replaced the diaphragm, coil and everything, replaced the thermostats twice over summer, still runs cold
I like my Knipex! Thanks!
Great video! I really enjoyed watching it! 👍🏼
Thank you.
Bahaha!!! Cold!
Young fella! I run equipment like 797 and other large equipment.
It was -55 degrees Celsius here last week.
Try fixing things in that temp😳
That's Celsius though, I'm pretty bad at math, but I'm sure that equates to about 55 degrees Fahrenheit, which is just a little cool. 😉
So why do the sensors read the wrong temps ?
Sensors can get out of calibration or just be wrong if they are poorly manufactured or older and well used and just past their time or just some other random issue with them. Some sensors can be wrong whey they are dirty, which cleaning can sometimes fix them, but a lot of the time, it is better to replace and not have to worry about it for the next ten years.
@@snoopdogie187 Not every one of them all at the same time. Either one of sensors causing the problem or harness and I would even look at engine battery supply and ground. Also look at cable jumpers for whatever reason when owners cut wire from them and put eyelets on them put them under battery cable nut cause hard to start. Even worst when ECM power and ground on same battery. Reason why Peterbilt ECM made power and ground wires into jumper cables and not on same battery too.
I love your Cat videos...better than all of the "funny cat" videos out there. (joke for those who don't get it). Again more information than I could absorb so I guess I'd better watch it again. Wow how in the world did those Cummins cam rollers get that bad. I guess the good news about that issue is as soon as you get the covers off, you can turn to your customer and say, "Here's yer problem lady". Hope you have become accustomed to the cold...THAT's COLD. Great Video Josh.
Thank you Larry, that day was so cold it was hard to deal with. I would troubleshoot for a few minutes then have to go inside for a few minutes. My hands would just get too cold.
@@AdeptApe Hmmmm, it was 70 here today and gonna be 80 next week. Oops does that sound like I'm rubbing it in. :)
Vice grips would get that plug out asap lol. Those pliers are neat though!
I don't mess with diagnostics when it's below zero and windy I just throw some torpedo heat under it for awhile and take it someplace warm for a month.
Love the work you do!
Keep up the great work!!
Did the driver notice it on the coolant temp gauge? At my dealer the complaint is typically "engine overheating" cause the operator sees the gauge peg. We arrive and the valve cover is just warm not hot. 15 minutes later he's up and running cause we brought a sensor due to it being such a common failure in the last few years. I'm still confused as to why cat is installing the suspect sensors in BRAND NEW machines. I suppose it's a Rev 2 or 3 sensor but still has the same flaw. Keep the videos coming! I have tons of cat experience but I enjoy getting your take on things...even if you block sand a top deck for 3 hrs to replace a head gasket ;) jk lol 😆 and any other emoji that shows I'm just kidding and not a keyboard cowboy.
YAY HAUL TRUCKS! Not lol. Been doing nothing but working on them for the past few weeks. And all the snow in the bed was frozen and wouldn't dump out. Couldn't wait for the bed to warm up so I could dump it, so it sat in the shop dripping water for 3 days.
Very interesting video keep up the good work
Hey I have a b model that smokes like that when she is cold, but after she gets around 160 to 170 she runs great no smoke other than normal for shifting gears. Lots of smoke all the time on the blow by all the time. Supposedly rebuild 250000 ago. Been told by every b model this is normal, just want to make sure thanks!
Sometimes your fuel can drain out of the cylinder head. I put sight glass in before head, return of head and at primary filter base. Let set over night or a day or so and check to see if fuel leaked out. If so you can put check valves in the fuel lines to prevent leaking back to tank.
Looks like a brakesaver was on that jewel.
If the fuel drained out of the head wouldn't it show no fuel pressure initially at cranking? Haven't done that many sight glasses before.
@@AdeptApe Never checked fuel psi with the sight glasses installed. But will on the next one. What if the fuel drained out the return side and the inlet showed fuel in the glass? The check valves are used in a TIB I think on a power generation. One goes in at the return filter base. The other I like to put at the fuel spliter outlet or inlet of the primary. The suction valve is a number eight and have to use reducers. You could put one on each tank, but they are pricey.
@@AdeptApe When it's that cold outside you exactly where your underwear stops.
@@AdeptApe We have one a few years ago that was smoking on cylinder four. Threw EUI's at it finally pulled the cylinder head off. I guess Cat was using plasma coating when they was refurbishing cylinder heads. Anyway the stuff was breaking off and we counted 32 cracks on the bottom of the head. Wonder why now all are upgrade to new?
32 cracks holy mackerel. That has to be a record, although Cat reman at times hasn't had the best reputation.
I hope you contacted someone at cat and complained about the poor quality of that block. I would be interested in hearing what their responce was.
Good video bro 👍.
Be nice if all mechanics diagnose like you do. Be worth the money then.
you want somebody to pull a head off because an injector is bad? After messing around with a sensor issue for two days that evidently didn't matter? I wish all customers were as understanding as you lol.
@@chughes44 I'm not a customer I work on my own shit bc mechanics are crooks. They will think it's this part change and and doesn't fix the problem and still charge you. He doing it the right way process of elimination not just a parts changer like you
Head gasket was leaking oil and the injector overfuelling had some washed the cylinder somewhat and caused some scoring, but thank you for your psychic input.
@@AdeptApe lol that is all information that probably should have been included in the video. The fact that i had to speculate what happened might give you some insight.
Dude ur a awesome Thech love ur videos
would've been cool to see a follow up vid of it purring in the cold.
You aren't the only one seeing intermittent ReMan issues... we've had a couple Long Blocks with similar issues
Love this video
Nice. Thanks.
Knipex gang!!
So what ended up actually fixing it? One new injector and all new temp sensors? Water, fuel, and ambient air?
Really enjoying the videos and frequency lately, very informative. Would cat built up that long block or farmed it out to a 3rd party engine builder. I seen something similar on another channel. Basicly poor workmanship from I known name. Turns out it was built by a volumes 3rd party on there behalf. 🏴
knipex are the best..
Best I've found so far, expensive, but super high quality and well designed.
Its funny I skipped passed the last video because of the "guy infront of white wall" kinda made it hard to stay engaged. I'd rather you record random work and just talk over it (aka called B Roll) or if you do have some footage for it that would be a bonus!
Very good for this job
I want the torq for all bolt and nut for cat13
Damnnn your nice with it
I had cat update my hydraulic hoses with covers and they didn't swap a hose with wires hanging out, instead it blew up on the 2nd job out. The they changed a fuel sending unit and it now only reads 1/2 to full and you have to guess if it's empty. Cat ain't what it used to be.
Might be time to invest in a better quality camera. 1080p at least! You make great videos 👍
The video quality is just fine.
@@mikeznel6048 720p isn’t that great for bigger screens. Looks grainy
I think the Cummins cams, correct me if I'm wrong, are only surface hardened. Series 60s will eat the cam in a similar way as well
All cams are surface hardened. Some may be hardened a bit deeper, but they are all surface hardened. Some may be harder than others. To achieve the same hardness throughout is going to be ridiculously expensive... like the more than the cost of the engine expensive. Then it will crack at some point. All about ductility where you need it, and hardness where you need it .
best yet
I’ve always really liked your videos, and 👍for the new style. I too have run into disappointment in a Cat reman engine. Been a Cat fan for a long time and almost lost me over the BS with this reman. Luckily I’ve got a good dealer that stood behind it.
Is Cat like other manufacturers that put their reman work out to bid?
Did you run a file on the bad cam, if it was soft, that would explain the problem, if not the cam follower was exerting excess pressure. Another cause is engine history, had the engine, some time in the past ever had a serious case of fuel-oil dilution? This is also a case where I would cut open the oil filter to see not only how much metal was in it, but also to see of the bypass was stuck open, perhaps by a metal chip.
Why not mention the fuel temp sender not reading correctly either? A trick I use for plugs like that is cut a allen key off then use a wrench open end, though those plyers do grip very well
An inch length of 3/8 key steel and a wrench.
I have 3 855 Cummins in shop with bad cams!
Just curious 🤔 where u located at, u r so good at what u do and appreciate ever video and the way it looks u mostly work on cat engines how about Cummins ISX
I don't really have much experience on the ISX, the one in the video another guy was working on. Would be happy to learn though.
I like the beeping.
The poor dog owners in the audience.
My 12.7 starts like that even after an overhaul and new injectors
I'm not getting it, how can 3 sensors be reading all wrong at the same time?
That just seems like too much of a coincidence.
Was it fixed by getting new sensors?
When I see multiple failures I pull out a wiring schematic and see if there is a common ground or power feed common to the failures. This may or may nor apply here as I have no idea which of these sensors are one wire, two wire (power and ground), or three wire (reference, ground, signal)...
That’s how them cummins cams destroy themselves
I would say the guy working at caterpillar must’ve been incredibly hung over when he put that long block together lol
Square Bar and spanner?
Excellent video! Did you use the IR thermometer to detect the dead hole while the engine was warming or CAT ET to monitor fuel delivery?
I was able to do a cutout test when cold and I got it, but didn't record it unfortunately!
@@AdeptApe Thanks Josh.
it's kinda funny that all 3 sensors would fail kinda at the same time and read similarly.. fuel, air, and coolant.
The fuel was pretty close and they would read correctly when about 40 degrees or above, but colder than that and they act weird.
@@AdeptApe I know you checked it, but first thing that comes to my mind when multiple things act up is a bad ground, and that not so nice harness repair would be a starting point... Did you swap all 3 sensors out in the end?
What would cause a a cat 2003 c-9 run hot radiator water pump and thermostat changed still runs hot after 2/3 pushes its on a d6r dozer trans and hyd staying normal cac was sent in too get pressure checked and came back good
so what was the solution did the injector cure the sensor issue
So why all sensors reading wacky?