Quote:
Originally Posted by Triple Jim
That would seem to indicate that the valves are not sealing well. Have you checked the valve clearances? These engines tighten up the clearances with use, and it's worse when the engine is cold, so it's not unusual for the valves not to seal when cold.
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Nah I made sure timing and valve lash was perfect. But would that explain the difference in compression between cylinders? I checked the head and cylinder with a straight edge and feeler gauge too - it was good. Filled the combustion chamber with water and sprayed 60+ psi of air into the inlets - no bubbles. Head Gasket is brand new and hasn't gone through any heat cycles and mating surfaces are clean.
Any other diagnostics I could do?