WILL NOT START! AirDog Fuel Pump Diag LB7 Duramax
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- Опубліковано 26 гру 2023
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First Start after arrival: No Power NO Crank NO Start NO FUEL!! 6.6 LB7 and a CAT 3126 • No Power NO Crank NO S...
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Customer Customer States Mechanic Fails Engine Transmission Gas Diesel off road race 4x4 street car daily driver scam dealership dealer technician how to - Авто та транспорт
Forgive me folks I've made an error. Looks like I omitted part about checking for power at the pump connector. The pump DID have power with the key on. I don't know what I did with that scene and I apologize for not noticing during editing.
Glad you mentioned that. Watched till the end of the video and I was about to comment on that. I figured you did check power on the connector.
No reason to apologize...I can only imagine how long it takes to edit your videos
No worries, my friend. The content you produced is excellent. Most of us, if not all of us, understand and appreciate your hard work.
Hi Ray, I am a 42 year experience technician as an authorized Bosch Diesel tech and when you were looking at the idle fuel trims, you pretty much had the diagnosis....GM stipulates 4mm spreads, but Bosch stipulates 4mm TOTAL....meaning 2 mm plus or minus. Also, be sure to use ONLY Bosch OEM remans.....only ones out there that work right and stay working.
I recently joined the automotive repair industry, instead of being in the fuel injection repair industry, so I am using your videos to familiarize myself with alot of the newer technologies. Great videos, btw.
You’ve been in the game for 4 plus decades…you don’t need to ‘familiarize’ yourself with much. With your experience, you’ve gotta be at 40 bucks an hour.
What do you say to the S&S injectors?
@@RainmanRaysRepairss&s or exergy are both the top 2 aftermarket gotos. Most of the performance guys use one of the 2. They do supply from stock on up. As a 3rd would by dynomite diesel, 4th flux diesel. I personally run S&S 150% over with dual 12mm pumps. High HP compound setup. They are Bosch modified injectors from the mentioned companies. Stay away from companies like injectors direct, diesel logic, pensicola, etc.
As a hard-working, dedicated business owner, it is absolutely critical that you have an employee to remind you that it's time to stop and go home!
A sure sign mischief is afoot when Wife Unit has her work gloves on and is raiding the tool box!
Maybe I missed it, did you make sure the truck (not the jump box) was suppling power to the air dog lift pump?
I did too. So whilst the pump is working we do not know if it is working from vehicle power.
Yell at the TV I wish this was live lol
That's the first thing I would check, in particular since there's also another connector on that harness. If the pump is not kicking on, it's causing a restriction in the suction line and the high-pressure fuel pump won't be able to pull in fuel on its own. Simple check, connect the AirDog to the jumper pack, crank the engine and if it's starts, the power delivery to the pump is just bad.
If it's an injector issue it wouldn't cause a no-start unless one of the injectors is stuck open and pulling the fuel pressure down, and judging by the fuel trim (and the engine sound) that isn't the case. It would also be easy to find since you're spewing lots of unburnt diesel out the exhaust. It sounded fine at WOT so I suspect more of a common fuel delivery problem than an injector one. The chance that ALL 8 injectors are bad is very slim.
And swapping 8 injectors is gonna be an expensive job if it's only a wiring issue to the lift pump.
Yeah, what about checking supply from ignition?
@@Stoney3K I believe the other plug is for the water separator sensor.
Dave seems like a Nice guy… Quiet and calm😊
Lauren seems qualified to guide airliners at the airport.
Ray like I was trying to say before”piece of Chevy”is funny
First coffee, first video... Ray and wife unit... great start to the day. 👱♀️
Glad to see WIFE UNIT and Dave both see the need for aid in clearing "door of death". Hope your Christmas went very well.
Those were the days. Probably done 50+ sets of those injectors when I was at the stealership. If you need some help fly me on down🤣🤣. It’s not a terrible job, just a lot of things to take off. Used to be able to knock a set out in about 6 hours. Good luck!
Repetition and Experience always cuts down on Shop Time except at Dealership, if they say 14 hours to do this Job, well it will cost you that time...
Can’t let them know it takes less time or they will adjust the time accordingly
I did all eight on my 04 LB7. I had about twelve hours in mine. I am a PDR guy who was a body man back when I had to do it. You're right it is a lot of stuff to remove to just get to the injectors, and making sure all the metal fuel lines are tight and leak free was a bit of a pain, but all has been good ever since.
Yesterday I thought about Ray. I was re-watching Smokey and the Bandit when Cledus said "negatory".
It made me smile 🙂
Ray, have you considered tossing a cheap big screen into the shop? Years ago while rebuilding a 91 4runner, I connected a GoPro to a monitor zip tied to the hood to find a leaking injector because the camera fit where I couldn't.
These days, you could use a big screen with a chromecast and literally cast your phone screen and just slide your phone in wherever you need and see it live.
Half way through video Ray be pulling truck into a stall. Ray says, "Loren's got me!" Yes Ray, she does have you, and you're luck to have "beautiful Loren!" 😮😂😂🎉🎉
It was a ford Transit, but a Mechanic at my work went to a ford dealership, and they had replaced the engine and damn near everything else, the Mech decided to bypass the filters, and it actually ran... he checked out the filter housings and found they were leaking in air. he replaced those and all was fixed, so the dealership wasted months and couldn't fix the problem, one guy comes in and had it fixed in a few hours.
109th! Hope you and your wife unit and family are having a wonderful Christmas season! And to never forget about the new employees! Roger in Pierre South Dakota
Where's shop dog🦧😢??guessng inside pt cruiser...hope not in 'that' jeep.
I put air dog in my Dirtymax at 160,000 km. (100,000)miles. Still on factory injectors. 1,045000 km now I have taken them to Bosch rebuilt Center. They cleaned tested all good. They didn’t sell me new ones . That was at 920,000km
so much advice from so many experts! diesels aren’t that simple irt their fuel system & are expensive to maintain with injector replacement costing $5k incl 14hrs labour. mybe i’ll stay with gas powered vehicle!
Ray I wanted to comment on how beautiful it is how you and Lauren get along with such a beautiful love you both have for each other. I hope one day I can have the same love that you both have for each other. You and Lauren and the kiddos have a great day.
Zipties and bias plies style right there. Like it.
Cosby Sauce……..PUT IT IN THE KETCHUP!
Hopefully you get the opportunity to replace the injectors in this. It's a 2 day job and it will make for some great and edumucational content.
It's a 10 - 12 hour job for someone that knows what they are doing and has the proper tools.
I did 1 on a Saturday back in the day of working in the dealership travelers going thru on a Saturday morning starting at 7am and gave them the truck back at 130 pm. Not a bad job at all.
10-12hrs seems like a bit much for the seasoned professional. The first one I did was over a decade ago in my early 20’s. I didn’t know near as much about turning a wrench as I do now. Electric ratchets didn’t exist, I was working out of a friend’s severely unorganized tool box, had to stop and make my own fuel line disconnect tool, got far deeper into a case of beer than I intended to, and included the time to stop and slather some JB Weld onto a pinhole leak in a steel coolant line. In the face of all of that adversity, I still got it done in 8hrs. I feel like I could probably come close to cutting that time in half today, but could definitely shave off 2hrs. Don’t get me wrong, it is a big job that I have absolutely no desire to do again, but an organized fella with a proper set of tools and years of experience can easily get it done within one 8hr work day.
2 layer valve covers are at the top of the list of the absolute dumbest ideas I’ve ever seen under a hood. I’d rather wrench on an inline diesel under water before I would a V configuration on the best of days. I vote that Ray just does a 12v Cummins swap rather than replacing Duramax injectors. The cost for parts and labor probably wouldn’t be very far apart. Lol
Check the cp4’s harness. It runs over the alternator and can become chafed
Hi everybody, greetings from 🇬🇧
An an Aussie what you do is hold your screen up to a mirror so the steering wheel is on the correct side
Great to see you Ray I hope you had a great Christmas with the family
Great video as always. Brake clean comes to the rescue..
Seasons greetings to you and your families, Ray and Dave!
Will it start with the lift pump powered by the jump box?
The AirDog (or FASS) lift pump was a common mod even on the 2nd-gen Dodge with the Cummins. It came with a weak lift pump from the factory, mounted on the block up by the fuel filter / water separator. On my '01, I did "phase 1", which was to relocate the lift pump to the frame rail right in front of the tank. (Well, that's really phase 2. Phase 1 is to install a fuel pressure gauge after the filter. The fragile Bosch VP44 really does not like to be starved of its lubricating and cooling "extra fuel".) Phase 3 is to install the aftermarket pump/filter/water separator by the tank like this customer's truck has.
And I kinda cringed (and laughed) when Ray described the labor and parts costs to swap injectors. It took this first-timer 2 hours to replace the factory injectors with something a little less docile. The hardest part was getting a wrench on #6. The injectors themselves weren't cheap, though - almost $900.
I hope you and Wife unit had a good Christmas with your kiddo. God Bless....
Howdy Ray, it's great to see you today.
Hope you had a great CHRISTMAS, Nice to see you and Wife Unit work together. Waiting for the New Year 🎉
Always nice to see Lauren.
👋
I am happy to see that at closing time you go home.
Welcoming back!
Excellent diag ray. Big job but not today. Cant wait to see you bring it back to normal operating procedure!
Wife unit is awesome!!!!
I hope that you and your family had a Merry Christmas and will have a wonderful New Year. ❤
The diesels now also need power ions. as without the injectors do not work. old ones did not need battery. just push and run😜😁
great video, Ray. thanks. So clear & logical. hands on learning experience for diesel fuel systems.
SCRAP IT!
Liked the way you talked about the job 'moving forward' whilst reversing at the same time.
15:14 Love the Super Troopers reference
Thanks for the informative video these video have taught me what is involved in diagnosing a problem and the time consuming repairs great job as always.
Back in the day, I used to guide large airliners into their gate slot. Lauren, ya did good. 👍
wife unit did a great job starting that cat eye diesel .
Happy new year .
Either you cut out half your diagnosis. Or you have not diagnosed enough to condemn injectors. I hope you checked for fuel pressure at the injectors
Good morning Ray. Hope you folks has a wonderful Christmas.
After looking at the price for a set of new injectors at $2,500 and a set of remans for $1,100 and 14 hours labor I will be surprised if the customer gets the work done.
Hey Ray after replacing two sets of Bosch remains I found out that Bosch and S&S injectors got together and totally redesigned Mechanicals inside the injector I bought them through D-Max store there are special only on Duramaxes play also have an injector kit with the valve cover bolts which also is issue and the injectors come with a 3-year warranty brand new
I’ll be looking forward to this video for injectors I’m about to do the same thing after the first of the year
Merry Christmas.
Love your videos man, please keep up the good work
I have a AirDog on my 01' Cummins, love it.
Great video was just wondering if you should have tested the pump power and socket powered from the car rather than external battery before saying the pump was OK?
Kind of like replacing a water pump on a car with timing belt. You have to remove fan belts, shroud, plastic cover, and timing belt first. Getting there is most of the cost. That's why you always replace water pump while replacing timing belt. You are already there.
In this case, getting there is most of the cost.
I had that done recently on my car too. I had an Egr assembly replaced due to massive crack in it causing coolant leaks. Got the Egr replaced, then 6km later my water pump packed it in. Mechanic said pay the extra $200 and get the timing belt done at the same time. Glad I did because the timing belt was overdue anyway so gave me one less thing to worry about. No more coolant leaks now and $4000 later lol
Yes , us height deprived people must make use of ladders from time to time
Wife unit looks cute in gloves you got her for Christmas 😎
Been waiting for this one since the introduction video.
Ray, Hope you and the family had a great Christmas 👍
Merry Christmas to you and the family Ray!! I have a 95' k2500 with a 97 engine been having starting issues with it , so I started with glow plugs.. Starts better.. but now to chase oil leaks.. LOL! Thanks for all the great videos !
Merry Christmas all!
Have a Happy and safe New years everyone!!
Merry Christmas! I hope you kept Santa's sleigh running on time!
thankyou Ray, excellent content,,a happy new year to you and all yours,,👏👌
Thank You
Lauren needs a pair of those glowy sticks they use at the airport, teamwork makes the dream work
hope you have had a nice Christmas and you are doing great on diagnosis thank you for the video
I put 4 sets of injectors in my 04 GMC DuraMax. It now has 530k miles and still running strong.
Great work as always. A cam and crank sensor issue wouldn't be fixed by starting it on brake cleaner. Diesels usually run a small "pilot" fuel injection followed by a main - especially during start, idle and low speed/load running. Your total fuel rate (11 mm3/injection) was equal to pilot (2.2 mm3/injection) + main (9.4 mm3/injection). The fuelling was also shown as pulse duration in microseconds (us). CMD = commanded. Cylinder balance value at -3 mm3/injection is pretty huge, so that is bad. In my experience, foot on the floor for a diesel doesn't have any impact as it is in crank mode until it reaches a specific engine speed. The fuel rate, timing, fuel pressure is specific to that mode. It's common that the start fuel quantity gets "ramped" up on a timer - that could be why it eventually started. Clearly under fuelling - hence needs to brake cleaner to get going. I wouldn't have thought to try that. FBC (Fuel balance Control) only works to even up the idle by looking at speed fluctuations on the flywheel. It usually shuts of at about 1500rpm. Is it building high pressure rail pressure during cranking? I would guess so. What's going on with the intake - that bit sitting near the alternator.
Brake clean has apparently replaced Diethyl Ether.
Probably because of the Dual use.
Hope you had a great Christmas ray and wife unit
great video
Love my LBZ!
You have a good partner there Ray, never let loose of her, they are very hard to find.
Just a thought, check if the deleted part of the air tube is fully sealed and not sucking unmetered air into the intake throwing the air/fuel ratio off before opening it all up. much love
Happy Holidays
It's Friday,it's 5 o clock............and its "Crackerjack"(old U.K. kids tv series).Your systematic diagnoseses!always work
Growing up few of my friends were always building muscle cars, working on this and that and I never paid attention, I was fucking off. Long story short my car broke, I fixed it, now I love working on cars, I wish I could go back 20 yrs and go to school
Teamwork is DreamWork
Merry Christmas ⛄
Make sure your getting power to the airdog before you do injectors. It should still fire and run even with a balance rate of over 4
What would Ray do without brakeclean? I'm always wondering that.😂
❤😂 Mr Clean would do. 😊
@@longnguyen-zu1qe 😂
good morning Mr. ray 👍👍
Rainman Ray. Merry Christmas to you and your family bro
Good morning Ray 🌄 let's get into this video lol 😂😂😂
good day ray
That’s a new truck.
I like how you checked to see if there was air in the system from the AirDog. I was running an AirDog lift pump on my Powerstroke. My pump would not self-prime when I changed the filters. I would have to screw the filter on and then loosen it, crank the truck until fuel pumped out of the filter, and then screw the filter on quickly. I had my Banks iDash set on the lift pump pressure so I could monitor this when I changed the filters. I like the pump but this was a pain. I ended up going back to the OEM lift pump so I could fit the 70gal aftermarket fuel tank. The AirDog is just sitting on a self now.
So your dog sucked in too much air!?!? Dang dude he must have farted for a week. 😃 😀
Im so glad i had this video of yours come up for me. Because this truck is doing the same as mine. With the same engine and the filter deleted with the lift pump. Not sure if its the same pump but im not worried with that.
My scan tool says lost communication with ficm.
Fyi, it don't mean it don't have 4x4 if it has no buttons. It might have a shifter on the floor. That one there has the full center column. So obviously it would have the buttons.
Super Troopers reference, spot on!!!!! lol
I work at a diesel shop. See these everyday. We have taken off dozens of airdogs and replaced with fass fuel system pump. I'd recommend that rainman
FASS is the best choice.
When they first came out I was assigned to work on them I've seen the injectors leaking fuel in the oil through the weep hole in the injectors causing the oil level to increase I had to fight with GM to replace the injectors until I had to remove both valve covers and put dye in the fuel to take pictures of it. I made me a fuel cap with a valve in it to push the fuel into the filter housing. I had a truck with 200 miles on it with a bad transmission we had to R&R only they wouldn't let us touch them with the Allison in them.
Expensive job, but cheaper than a new truck.
Lauren would fit right in on a carrier deck wearing a yellow Jersey.
Love your work Ray and yes i wondering about the voltage check at the connector as you were lowering the car down. Happy New Year to you all
This is indeed a GMT800 shop moment lol
GOBBLESS BARB AND HOSS
Fed her the cosby sauce eh ray?? Are we getting up to OSHA violations today?? 😂😂😂 have a great day my friend!!! Hope you had a great christmas
Lauren was doing the Macarena dance.
I do believe that's the same engine in the HUMMV and that black box on the high pressure fuel pump can cause all those issues when it goes bad. When they go bad they automatically think the engine is overheating and it shuts down the fuel pump. Thus making the lift pump the only source of fuel pressure.
Humvees should have the older 6.5 in them, completely different engine and pump. All of the injector lines go to the pump on those. It’s a Stanadyne rotary pump. The black box you refer to is on the driver’s side of the pump body, is about the size of a deck of cards and is what make the pump injector fuel to each injector. It’s called a PMD - pump mounted driver, or FSD - fuel solenoid driver.
The CP 3 on the Duramax is made by Bosch and feeds 2 fuel rails and then the injector lines come off of the fuel rails - 4 per side.
Another day for a Chevrolet. Keeping mechanics fed since... FOREVER!
I have seen video - think it was Wheeler Dealer - specialty shops have the ability to test fire injectors on the bench. A good one looks very different from a bad one.