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1986 Buick Century Custom 2.5L Misfire
Posted to GM Driveability on 9/10/2001 3 Replies

There is a rolling misfire that randomly changes from cylinder to [...] short burn line as observed on my digital osc. On this osc. in the past I have observed this extreme short burn line and real high firing line when a spark plug is shorted. But, one by one...

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car Vehicle Data

1986 Buick Century Custom

VIN 1G4AH19R7G
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / tbi
EmissionsUS Federal
SymptomsMisfire
OccursAlways
Message Closed

car Vehicle Data

1986 Buick Century Custom

VIN 1G4AH19R7G
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / tbi
EmissionsUS Federal
SymptomsMisfire
OccursAlways