|
Did you figure it out? I can't help but wonder why you replaced your PCV valve? Was it clogged, or just preventative maintenance? From my experience, white smoke is water or antifreeze. White-blue smoke is oil or transmission fluid. White smoke is generally water in the combustion camber or exhaust system, and could indicate anything from a cracked or warped head, a bad head gasket, a bad seal between the block and the oil filter housing (it's water cooled), or just condensation boiling off in the exhaust. White-blue smoke is oil getting into the combustion camber. If the smoke occurs at startup and goes away once warm, it could be your valve stem seals. The oil passes the seals when the car sits for a period of time, burns of in the first few seconds the car is started, and stops smoking completely once the seals heat up and expand. Continuous white-blue smoke while driving is typically worn piston rings. The fact that it occurs at startup and you replaced your pcv valve makes me think in may be valve seals. The same gunk that clogs a pcv valve can coat the valve seals and cause them to "dry up" and shrink. I had the same issue on an infiniti g35. Before replacing the seals I gambled and tried running Seafoam in the oil. It actual worked. It must have desolved the gunk and the valve seals swelled and stopped leaking.
Good luck, and keep us posted.
|