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Discussion in 'Engine Topic' started by '77LT, Aug 25, 2010.
Does anyone know why a big cloud of white smoke comes out the exhaust when i first start up my car?
Is it white smoke or does it have a blue tinge to it? If its oil, your valve seals are bad, allowing oil to collect on top of your intake valves and then when you start the engine, the oil burns. This causes it to smoke on startup.
It is just a white smoke
Condensation in the muffler.
+1 on bad valve seals no doubt
My 1980 Chevy Pickup Does It Everytime I Start It. Doesnt Effect The Way It Drives Or Foul Plugs So I Dont Worrie About It.
Condensation somewhere in the exhaust. Lot of heat (engine) meets colder denser moist air. See it up here in the winter all the time, starting late fall, lasting until spring. Hot summer nights though you'll never see a hint. If its a lot of white smoke, like it never stops, regardless of exhaust or engine temps, and smells sweet, it could be antifreeze from a head gasket leaking.
Just think of it as a little extra upper cylinder lube
I would say that its valve seals, but if im correct then a blown head gasket can cause like a white steam to come out of the exhaust but i think that it does it even after start up...