GL320 2008 Diesel cranks but won't start when the engine is hot

Dec 21, 2017 | 07:06 AM

memaf

Thread Starter

Newbie

Joined: Dec 2017

Posts: 6

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GL320 2008 Diesel v3.0

GL320 2008 Diesel cranks but won't start when the engine is hot

Hi everyone,
I'm very new in this forum. Anyway, i have GL320 2008 model Diesel which cranks but won't start when the engine is hot. I tried changing CPS but didn't help.

Now a different mechanic is telling me i need to replace 4 injectors. But i would like to be sure if there is a possibility that a bad injector(s) can cause this problem of engine cranks without starting when hot.

Thank you in advance for any insight that you may provide.

Thanks,

Dec 22, 2017 | 01:29 PM

johny75

Member

Joined: Jun 2015

Posts: 116

Likes: 10

'08 GL320

If you have a bad injector, I would think there would be code on the dash pointing to it, or some other code related to misfire, rough idle, etc.. If you don't have any dash lights, then I myself doubt this is it.

Dec 22, 2017 | 09:42 PM

Fourdiesel

Super Member

Joined: Feb 2009

Posts: 711

Likes: 11

From: NW corner of CONUS

2008 GL 320 CDI, 2004 VW V10 Touareg TDI

Dispersion values

Quote:

Originally Posted by memaf

Nothing in your post indicates where you are located (USA/elsewhere?) so we have no idea if you are close to a dealer. But if you are, you can have a diagnostic run on your engine to measure the dispersion [correction/deviation] values of the injectors. If the injectors are the cause of the problem that test will show it. If all the injectors are within limits it is hard to see how the failure to hot start is related to them.
The cost of the dealer's diagnostic time is cheap compared to the cost of replacing 4 injectors if that isn't necessary.

Dec 26, 2017 | 09:22 AM