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Erratic starting

sandytwo

New Member
Joined
Mar 27, 2025
Messages
1
Location
Merseyside
Car
2003 C200 sports coupe
2003 C200 Mercedes sports coupe.

When starting [not cold weather] the engine is rough, put it in drive and the car is like a kangaroo...[jumping] last for about 40 seconds and then ok..
Go for a short run and leave it for a couple of hours...still starts ok, but after say 3 hours...back to erratic start..
Has a local mechanic do a diagnostic: fault - timing chain; camshaft fuel trim; Air flow sensor..
have renewed the latter two items...but fault still there.. which leaves the timing chain or something else ?..[it had a new one 40,000 miles ago, when tensioner seized] [when it slipped and bent the valves].

When going ..plenty of power etc..

What is likely to be wrong with the timing chain ??...sounds like major surgery ?

any comments please...

Peter Clare
 

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