R Class - starting problems - any thoughts?

[timwood2000]

For a while now, when starting from cold, the engine turns over fine, but doesn't start for about 8-10 seconds, followed by a small cloud of dark exhaust fumes at the back.

It hasn't got worse (or better), but starts fine when warmed up. Batteries are fairly new.

Any ideas what the problem could be?

Thanks
Tim

 

[4life211]

Air in lines ..maybe

 

[C36fan]

For a while now, when starting from cold, the engine turns over fine, but doesn't start for about 8-10 seconds, followed by a small cloud of dark exhaust fumes at the back.

It hasn't got worse (or better), but starts fine when warmed up. Batteries are fairly new.

Any ideas what the problem could be?

Thanks
Tim

Get the injectors tested and fuel lines too.

 

[Deleted member 37751]

Sound so like a leaking injector to me.

 

[CabrioDave]

It's bound to be mentioned elsewhere on the forum, but this fault-finding chart is worth printing out, for anyone who has a diesel: https://www.pfjones.co.uk/troubleshoot-a-diesel-engine.html

 

[MikeInWimbledon]

320CDI - starting problems -Injectors

Sounds like an injector issue.

BTW - The title for this thread should have been 320 CDI starting problem -

You would have attracted more replies as the problem is the engine not the model.

There'll be loads of people who've seen the same problem in other vehicles

 

[paul_f]

How old are the glow plugs?

 

[mbenz1]

My money is on the Glow plug module relay. Very common on the V6 CDI and symptoms more prominent on cold / winter days. It could also be a faulty glow plug. Get it checked on a STAR Diagnosis first before dashing out the dollars.

Sent from my GT-I9505 using MBClub UK

 

[timwood2000]

Good point about the glow plugs - a few years old for sure. Thanks

 

[Dunhamkid]

My money is on the Glow plug module relay. Very common on the V6 CDI and symptoms more prominent on cold / winter days. It could also be a faulty glow plug. Get it checked on a STAR Diagnosis first before dashing out the dollars.

Sent from my GT-I9505 using MBClub UK

I second that!!