I recently had a set of rebuilt heads and the piston rings replaced on my wifes 93 mazda mpv minivan. The van only had 74k miles on it and was otherwise in good shape. After having the vehicle back for about week, I went ahead and changed the oil in the vehicle. The next week I have noticed a puff of whiteish (with a slight blueish tint) smoke comes out of the tail pipe right after starting the vehicle after it has been sitting for more than 15 -20 minutes. It seems to happen all the time after sitting overnight. The smoke only lasts about 3-4 seconds but it smells acrid, alot like gasoline. It's not the normal condensation that a car has after sitting for a while. The vehicle has not done this the first 300 or so miles, and has only recently shown up. Any ideas? I can't seem to put my finger on what the problem is. Also, the car seems alot harder to start since getting back. Is this because the rings were replaced and the piston to cylinder wall seal is a bit tighter?
- posted
20 years ago