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1991 Buick Skylark 2.5L Timing
Posted to GM Engine on 3/18/2001

This vehciel will run fine for about 5-10 minutes. Then all of a sudden it runs rough like it has a dead hole and it backfires dramatically through the intake. Mechanical timing seems fine, timing chain and gears are intact. ignition patterns look ok when it i...

  Related Documents & Media  1991 Buick Skylark

 
Message Closed w/FIX

car Vehicle Data

1991 Buick Skylark

VIN 1G4NV54USM
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI
AffectedTiming
ConditionsBackfires
Message Closed w/FIX

car Vehicle Data

1991 Buick Skylark

VIN 1G4NV54USM
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI
AffectedTiming
ConditionsBackfires