Buick Century Problem Report
Buick Century Oil Pump Drive O-ring May Leak Oil From Rear of Engine
An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.
Engine leaking quart of oil every 300 miles. Big O Auto repair said oil pump O-ring seal needed replaced. Cost estimated at $450.00 (mostly labor). Technician had seen this problem many times before on GM 3.1 engines. - Visitor
Just bought this car 3 weeks ago. Last week service engine soon light illuminated and stayed on...
It leaks oil soon after i start the car and runs dowm the front of the motor on the right side....
Leak is not sever, but is constant.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...