I did a cylinder leak down test and could only find air leaking out of the crankcase where the dipstick goes into. I also did a compression test and it was 45 lbs. Adding a little oil to the cylinder thru plug hole and retested and there was no increase in compression.the leak down was in the yellow on the gage.engine still wont start,has good spark and fuel. The owner says the engine did not smoke.Would a blown head gasket make air come out of the crankcase?:dunno:
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