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Anonymous Poster
philpamfisher@bellsouth.net
Aug 17, 2009, 5:29 AM
Post #1 of 2
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1999 Mercedes ML 430
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Have a 1999 Ml 430 that 99% of the time runs fine until some point after engine warms up. Then it start missing. The miss is isolated to the number 4 cyl. We have replaced coil, plugs and wires. Sometimes it will start missing after only a few minutes while others it can run for an hour before starting the miss. Almost every morning when car has sit over night it does not miss until after warm up. Any one ran into this before?
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Loren Champlain Sr
Veteran
/ Moderator
Aug 17, 2009, 12:14 PM
Post #2 of 2
(3056 views)
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Re: 1999 Mercedes ML 430
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You could have an injector over-fueling. Need to get an exhaust analyzer involved to see if you have excessive CO and/or HC when this is happening. A cold engine can 'handle' the extra fuel from an over zealous injector. A warm engine can't. Just a thought.
Loren
SW Washington
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