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2000 Buick Regal LS 3.8L Poor Idle Quality, Cyl 4 misfires
Posted to GM Driveability on 9/14/2007 19 Replies

This will not cause fault codes, but I have a rough idle and high misfire counts for cylinder 4 only when viewed on Tech 2. The counts are higher at idle than when cruising, seems to be vacuum related but cannot find a vacuum leak, with propane or smoke machin...

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  Related Documents & Media  2000 Buick Regal LS

 
Message Closed w/FIX

car Vehicle Data

2000 Buick Regal LS

VIN 2G4WB55K14
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Cyl 4 Misfires
OccursAlways, Idle
Message Closed w/FIX

car Vehicle Data

2000 Buick Regal LS

VIN 2G4WB55K14
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Cyl 4 Misfires
OccursAlways, Idle