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1997 Cadillac Concours Repair Question


Topics covered: Coolant, Engine, Engine performance.
Mileage: No information provided.

Asked on August 7, 2009

1997 Cadillac Concours head gasket

Engine Performance problem
1997 Cadillac Concours V8 Front Wheel Drive Automatic 63,000 miles

can a defective head gasket cause a cylinder to run lean and miss with out showing any other signs of a leak
Avatar Asked by lenvette

Answer

Replied on August 7, 2009

It can definately cause it to miss, as the coolant doesn't burn. It would create more unburned fuel in the system, that may cause it to indicate rich. The coolant is also capable of contaminating the O2 sensor.

Tiny Answered by factoryjack (expert)
4,285 answers provided