Hi MRMTAYLOR,
If no leakage or excessive smoke is found, the valve seals are the most probable.
The intake valve seal leakage would be burnt in the combustion chamber so smoke much less.
If the exhaust valve seals leaks, smoke would be more but the engine have to be running warm before the smoke is noticeable.
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Thursday, June 5th, 2008 AT 11:04 AM