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throttle wont let go

ian320

New Member
Joined
Mar 12, 2012
Messages
19
Car
SLK 320
Hi All,

New here so apologies if this has been asked before but I can't find it in search,

Bought a SLK 320, 200 vintage, 89000 miles, full service history.

Generally the car seems good but there is a slight unevenness to the tickover, I hesitate to call it a misfire, almost a partial one, think this may be a faulty lead or plug?

More worrying is throttle response, makes no difference while driving with plenty of power and no sign of a misfire. The issue only shows when out of gear, if the throttle is blipped the revs are a little slow to pick up but more noticeably the revs are very slow to fall.

Any ideas?
 

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