I just rebuilt a 2200 2.2L and when I started it today to get it broken in, it smokes a few seconds after its runs. I realize the rings aren't seated but d@mn theres a lot of smoke and its white/gray. What I used for the rebuild: copper head gasket, new bearings, eagle rods, weisco pistons and rings, and all the rest of the gaskets.
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I retightened the head bolts and it still smokes
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If by chance it was the headgasket there could still some residual water in the oil.