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2003 Mercedes c220 cdi - black smoke


dhumble5
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Your opinions please. The wife was out in the motor today she said when she pulls away there is clouds of black smoke coming out I know nought about motors but when she come in I could here a rattling noise coming from the middle of the car sounded like the exhaust was rattling. Any of you have any idea. Thanks

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Probably injector drip, filthy egr valve,or a glowplug not working, put a load of injector cleaner in and see if it helps clean injectors and egr.

 

Just noticed it's a 2003, so possibly no egr, so either injector drip of glowplug problem, put some decent injector cleaner in and see if it helps.

Edited by andypaint
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More likely lack of turbo boost - loads of fuel injected but not enough induction air to burn it properly. Could be turbo or a leak between turbo and engine or might be a constriction in front of the turbo (collapsed ducting).

 

Need more info such as real power available, etc, etc.

 

Lesser possibility is head gasket gone between two cylinders.

 

Just general comments as I've no experience of that particular engine.

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  • 2 weeks later...

An update. Believe it or not the smoke was because the exhaust clamp snaped off were the front and back box joined together. The ratlling was the clamp on the exhaust.Cheaper repair than turbo etc. £7 for new clamp. it I was grey smoke not black

Edited by dhumble5
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