Engine trouble 300E Diesel 1994

Buddychops

New Member
Joined
Jul 31, 2015
Messages
2
Reaction score
0
Location
Suffolk
Website
www.barrysmithcars.co.uk
Your Mercedes
ML 270 cdi 2002
We are working on a 1994 Mercedes 300E diesel, which has a starting/engine problem.
If we do get it running, the only way to stop it is by shutting off the air intake under the bonnet.
To start it, it turns over and over. we remove part of the air induction (the centre part) and it fires up eventually.
When the induction centre part is put back on, the engine won’t rev up.
Any clues or advice, greatly appreciated.
Thank you.
Barry
 

Roxie

Senior Member
Joined
Sep 20, 2011
Messages
819
Reaction score
17
Location
Lincolnshire
Your Mercedes
C Class 350CDI 2012
Sounds like the vacuum system has a problem.
The induction has a butterfly valve to increase the brake vacuum and also controls the fast idle in the fuel pump etc.
 

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