I rebuilt an engine and the compression is zero. I aligned the cam and crank marks. Lapped the valves and they seem to be closed at top dead center. Put some compressed air thru the spark plug hole and it appears to be leaking out of the exhaust valve a little. You would think I could get a...
I have a fairly new 5.5 550 edger that started to smoke out of the exhaust and does not like to run. Oil level is perfect. Took plug out and belt off and turned over but stiff. Popped head off, same thing. No scores in cylinder. Any ideas on tight engine?