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1978 Cadillac DeVille 7.0L Poor Idle Quality, Misfire
Posted to GM Driveability on 11/10/2010 23 Replies

Rough idle in drive when hot, feels like a miss. Carb has been rebuilt, new cap, rotor, wires & plugs. Runs great when cold, no hesisation, great pick up. Just rough idle when engine is at operating temps. If driven on highway and exit, car will idle fine for ...

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Message Closed w/FIX

car Vehicle Data

1978 Cadillac DeVille

VIN 6D69S8Q224
Engine7.0 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryCarburetion / 4BB
EmissionsFED
SymptomsPoor Idle Quality, Misfire
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1978 Cadillac DeVille

VIN 6D69S8Q224
Engine7.0 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryCarburetion / 4BB
EmissionsFED
SymptomsPoor Idle Quality, Misfire
OccursHot, Idle