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1991 Mercedes-Benz 420SEL 4.2L Excessive Emissions, Poor Idle Quality, Flooding
Posted to European Driveability on 10/21/2004 12 Replies

Greetings to all ! This very clean , only driven in town 420 SEL has been a pain. Started out as a simple valve stem seal replacement job.......... After replacing seals , the engine had a misfire on cylinder #2. Ignition system worked fine , plugs dirty , rep...

12 Replies Received (View Replies)

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car Vehicle Data

1991 Mercedes-Benz 420SEL

VIN WDBCA35EXM
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CISE
EmissionsFED
SymptomsExcessive Emissions, Poor Idle Quality, Flooding
OccursAlways, Cold, After a Hot Soak, After Setting a Couple Hours
Message Closed w/FIX

car Vehicle Data

1991 Mercedes-Benz 420SEL

VIN WDBCA35EXM
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CISE
EmissionsFED
SymptomsExcessive Emissions, Poor Idle Quality, Flooding
OccursAlways, Cold, After a Hot Soak, After Setting a Couple Hours