Take a glass of ice water, and hold it in the exhaust stream. If you get a
lot of condensation, then it's just that - water. If it doesn't condense,
then you're burning something else (most likely oil, though oil tends to
have a bluish tint to it when burned). Does it go away once the engine's
However, if you smell it, and it smells like anti-freeze, that's a big
problem. With the vehicle cold, remove the radiator cap, and start it up.
Look for bubbles coming up through the coolant. Bubbles=blown head gasket.
My guess it it's just water vapor condensing in the cooler air.
I went back out and started the engine after we drove it from my daughter's
apartment to here, about 15 minutes. There was nothing visible from the
exhaust stream this time. On the way here it seemed like a lot though.
Thanks for the test suggestion. That makes a lot of sense. I will try that
this afternoon when I get some time to work on it.
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