Hello I have a 2001 c320 that at first showed a misfire on cylinder 6 it only misfires intermittently and varies in strength also only misfires at idle! I swapped coils and wiresthe which seemed to fix it for about a week ran great now I'm starting to get it back but no check engine light or codes now?? Just does not make sense to me? Any ideas? Thanks!!
Sound like spark plugs. What is ur current mileage and what was last time plugs were changed previously?. Have u noticed any oil leak arround plugs or arround rocker cover gasket?
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