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...
This is actually a Buick Electra Station Wagon 1986, V-8. I had the engine replaced. The mecha...
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.