Hi, I own a 2000 Cavalier z24 convertible with an automatic transmission.
My mechanic ran out of ideas of what could be causing this :
If I start my car in the mornings, when its completly cold, it throws thick smoke from burning oil for about 10 min, after it gets warm, it stops unless I hit the gas pedal too hard it will do it again.
to my knowledge he checked all valves and O rings, inspected head for cracks, raplaced all gaskets on the head, but still no luck. Any ideas of what could be causing this? Im looking for the most rare thing that could be causing this.
what can he be overlooking?
THANKS
Piston rings are usually the reason you will burn oil. When ur car heats up, the rings will expand (Untill you hit the pedal hard enough and rev it up) and stop the oil from reaching the combustion chamber. Best thing I can say is just keep a eye on it. Its not that big a deal. If its really bothering you, you can find another LD9 from a yard and throw that in. Goodluck!
I would do a leak down test or compression test on it.. My suspicion is the valve seals... You start it up after sitting and it burns the oil that's leaked into the cylinder.. It smokes when you rev it up because you are putting a load on the engine and burning the rest of the oil out...
I have this same problem on my honda, and my 3100 swapped cavalier.
- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
As they said either valve guides-seals or rings...
Damn I forgot about the valve seals
