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1989 Buick Century Custom 2.5L No Start, Backfires
Posted to GM Driveability on 1/24/2005 17 Replies

Backfires through the intake, and the upper coil was not firing. New module and coils, now both coils firing, still backfires through the intake. Made marks on timing cover and crank pulley, all plugs are firing at TDC each cylinder. No valves seem to be stick...

17 Replies Received (View Replies)

  Related Documents & Media  1989 Buick Century Custom

 
Message Closed w/FIX

car Vehicle Data

1989 Buick Century Custom

VIN 1G4AH51R2K
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsFederal
SymptomsNo Start, Backfires
OccursAlways
Message Closed w/FIX

car Vehicle Data

1989 Buick Century Custom

VIN 1G4AH51R2K
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsFederal
SymptomsNo Start, Backfires
OccursAlways