oil burning 96 bonniville issue
hello, my car is a 96 Bonneville with the NON supercharged engine, and 220k. The problem started with white smoke after sitting in traffic, it is not coolant, it smells like oil, the exhaust pipe is black, it doesnt use any coolant , but does use a lot of oil if car is being drivin slowly or in stop and go traffic. I recently drove 300 miles round trip on the highway and the car used absolutely not one drop of oil. I replaced the pcv with a kit that included pcv, two O-rings, spring and cap. this didnt help. I checked the uim , it has a date of 2008, I am assuming the lim gaskets were replaced at the same time but not certain. finally I checked the spark plugs, the front plugs look normal with a tan color, the 3 plugs facing the firewall have black crusty residue on them. the engine is smooth and peppy, with no signs of engine trouble, any help is appreciated .
Last edited by pokerguy50; 10-09-2014 at 07:22 AM.