How To Replace Glow Plugs - 3.0 Diesel, Jeep Grand Cherokee
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- čas přidán 12. 09. 2024
- This video showcases the process of replacement of the 6 glow plugs on the Mercedes 3.0 Liter Diesel in a Jeep Grand Cherokee. The process is the same for other vehicles that use this popular engine such as ML Series Mercedes and Sprinter Vans, among others.
The diagnostics performed, prior to replacement, could be shown if requested but it was simply an active code for a #6 glow plug open. I tested the module and harnesses for continuity , opens and shorts - all was OK. It was decided by the owner after a discussion to replace all 6 glow plugs due to mileage and desire to upkeep the maintenance of the vehicle.
Really appreciate you making this video, especially mentioning the torque specs.. I had the same error code(s), swapped all 6 glow plugs, and all went well.. Thanks again.. 👍🏼
You’re a master. I am not touching these with a 20ft pole - trade-in time!
Those tips you're giving as you're working your way through are golden!
Thanks mate!
Excellent how to. Thank you. I had one glow plug refuse to release and had to have the head replaced (under warrant.) Now cylinder 5 glow plug is faulting.
Really appreciate that you made this video. I tackled the job yesterday, all went well. Thank you very much!
Dude, you are a legend, thanks for doing such an in depth video, all other vids showing this just seem to do bank 4 (the easy one). You just saved me £300, i owe you a beer lol, top man!!!
Stephen Boomer thanks mate!
Glad you could use the info! Let me know if you need anything else!
That no 6 is a real bugger😉
Great video!!
Number 6 glow plug fault, excellent video to follow. All plugs came out and reinstalled easily thanks to your easy to follow steps. Again thanks...
I just changed my No 2, 5 & 6. No 6 is a swine, but I used a GP socket with an integral UJ, a short extension, and my 3/8" ratchet drive went underneath the crossbar (top of picture @11:20). I seemed to have less trouble with No 6 than you did, perhaps because you are wearing gloves! (Don't know how anyone can work with gloves.) I removed the engine cover clip that I think your finger is on @12:05, and I removed bolt securing that plastic cable duct on the side of the engine so I could pull the duct forward a bit. There are horror stories of GPs snapping off, but like yours, mine came out easy - soaked 3 days with penetrating but didn't warm the engine.
Thanks for the video. Middle of January and of course the plug that throws the code is #6! At least I know what I'm up against and have proof the job can be done, gonna be good times in the driveway. Cheers buddy.
Great video, thank you
Good video … thx for sharing 👌🏼👍🏼
Thanks a great help!!
First of all thanks for making this video. The world needs quality content creators; such as yourself.. Just a heads up for anybody that does have this particular diesel as I do in my 2014 Jeep Grand Cherokee.. I recently took it in for an oil change and again another service light this time for number 6 plug.. now here's the bit of information that I didn't see covered in your video.. my mechanic says that the wiring harness also needs to be replaced in addition to the good maintenance measure of replacing all of the plugs.. he says that there is 10 hours worth of Labor because the wiring harness hooks into the main harness of the vehicle and requires a lot of pulling things apart and then putting them back.. the wiring harness alone is $1,300 and each plug 400 not including the 10 hours labor at $145 /hr. Please share your thoughts on this wiring harness nonsense.. why would it be necessary to have to replace all that when it's just the number 6 plug.. I understand the necessity to do all the plugs at the same time.. that's just cost-effective from a labor standpoint.. thanks again..
I disagree with this dealership nonsense. You can measure resistances and do several other checks including visual assessments before changing the whole harness. That’s just a way for flat rate shops to have a ‘billable event’ instead of actually troubleshooting a failure. It’s a constant irritation to me and other techs that actually care about our customers vs greedy shops and greedy techs who can change that harness in 4 hours and get paid 10. It’s trash. And it’s hurting our industry’s brand.
Hey Nick, I have a 2014 Diesel GC as well. Looks like the EcoDiesel engine is basically this 3.0 one in reverse. Were you able to swap the plugs okay? Looks like there's a bit more maneuvering in the EcoDiesel. Thanks for any input.
What year GC was this engine in?
I have 2012 JGCL
Awesome video!!!
Great video, in depth, many many thanks brother!
Well done sir
I wish every mechanic had the same work ethic as you do. Nice vid & good job. Do the factory glow plugs get anti seize as you're doing??? It seems to me that braking glow plugs off in the head is a common thing.
Your thoughts???
I don’t think they normally apply any anti seize, from my experience.
The plugs are stainless steel so there’s hope but my motto with stuff like this is always “better to be looking AT it, rather than FOR it” !!
hello from Italy and congratulations for the video, really very clear. The only thing that worries me is that there is a real legend of how easy it is to break these glow plugs and do very expensive damage. I have heard from several people but no one agrees on this: is it better to proceed with the engine slightly warm or cold? How many NM of torque need to be retightened?
Hi Luigi, I like to try and change them when everything is a little warm. If you find one that seems seized, you can soak it overnight in penetrating fluid. Make sure the socket is fully engaged to the bottom of the hex. This will help ensure that if you have a tight one, it won't break off. I have had some that were tight but be patient, and work the threads in and out and continue to soak in penetrating oil. It will eventually work its way out.
Install to 8 Nm (71 inch/lbs)
@@normando1974 thank you bro! I will try on my CRD. thanks for the advice, you gave me courage with your suggestions
@@luigia.8740 Good Luck. Let me know if you get stuck on anything,
Great video. Thanks.
How do I know when I need new glow plugs? Will the car tell me? Fault code? Or just by miles?
Fault code will normally show up
It seems the plugs get seized in at the bottom (basically at the combustion chamber /end of the shaft), a bit of anti seize down that far may be the ticket to prevent seized plug in there
For this engine you should not use Bosch glow plugs. It is known as not working. Use BERU GE 105
I'm getting the "Diesel preheat in process" warning on the dash intermittently. When I get it, the CEL comes on and will stay on for a few days. During those days, my remote start will start, but kill the motor in about 5 seconds. I think I need to replace the gloplugs. I plan to use a high temp antiseize on them. Any reason not to do that?
I had no idea how bad access was on a jeep diesel engine they were saying something so hard to get to.
May I ask what kind of Jeep you have? I have a 2008 Jeep Grand Cherokee diesel and noticed that well the overall engine looks the same some minor details here and there are different so I was just curious what your specific vehicle was.
It’s been a while. That’s was a customers jeep. I believe it was a 2012?
Mechanics say BERU is much better than BOSH
Norm are u in America? I would like to talk to you bout my ecodiesel with same plug # 6 i need help
om642 engine Mercedes Benz has made millions and millions of them.
Where are you located I’m looking for a diesel mechanic need gold plugs on a grand Cherokee 2014 Eco diesel
St. Albert Alberta.
My garage broke a glow plug. they refused to repair it unless I pay.. F....
Buen vídeo, el tubo de admisión del turbo pierde aceite. Hay un nuevo colector de admisión mejor que el que lleva el coche de origen dejo la referencia por si alguien quiere comprarlo es para el crd 3000 53013672AE
Gracias. tienes un enlace para comprar?
08:08 numbering of cylinders
??
@@normando1974 it's a reminder for the corresponding cilynder/glow :-) useful for all viewers too I hope
Norm how can i talk to you for you to help me?
Call me at OK Tire St Albert.
Is this the same engine as what’s in the ram 1500 ecodiesel
Yes it is.
@@normando1974 I dont think that is right, @ 10:24 you can see the Mercedes logo on the fuel rail part sticker, which would means the vehicle you were working on was probably 2007 or 2008 (in North America). Daimler Benz merged with Chrysler / Jeep for a short while and put their OM642 3.0L diesel in some WK models. The view of the headlights at 23:04 confirms WK model.
The Ram and Grand Cherokee 3.0L Ecodiesel (2014) was a FCA Italian VM Motori diesel motor. The only thing common was 3.0L size.
The Mercedes OM642 was put in many vehicles. en.wikipedia.org/wiki/Mercedes-Benz_OM642_engine I have it in my WK and another car.
Thanks to you and your camera person for posting your helpful video. Nice job. For DIYers that is a tough job. I need to do it currently on mine. I'll probably wait to do it when I replace the oil cooler seals. Hope you post more videos.
I’ll confirm shortly but what you said sounds correct so for now I’ll stand corrected!
Thanks for the in depth reply 👍🏻
No, this is a mb. The ecodiesel is a Fiat.
fucking modern engines. It's difficult even just that
Just one information: JEEP workshop manual recommends to heat up the engine up to 90ºC before remove the glow plugs