Thread: rough idle on 420sel
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Old 05-03-2004, 01:29 AM
Cigar Havana's Avatar
Cigar Havana Cigar Havana is offline
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Join Date: Jan 2003
Location: London Ontario Canada
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Lots of Info
If you use the search feature, there is lots of info at this site about rough idling 420SEL's. Also check the rough idle on 560SEL's the engines have similar principles to the 420SEL's engine.

There are about 10 different things that could be causing the rough idle.
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