I finally got around to the compression test; lots of overtime this week.
Initially, I got 50psi which I think is on the low side. Then I sprayed wd-40 into the cylinder and I think I ruined my compression tester because it read zero. Next I poured a little motor oil in and there is a noticeable increase of pressure on cranking. The tester still reads zero but I can feel a lot of resistance when pulling the rope.
What should I learn from this? Should I pull the head to see what things look like and install a new head gasket to see if that helps?
Thanks[/QUOTE
50 is low your comp gauge is now toast ..a little bit of oil in the cyl will boost the comp for sure place your thumb over the hole and have someone pull it over if it moves your finger off the hole its good if not pull the head and have a look and see what the cyl looks like if its scored up bad the motor is junk if the cyl looks fine replace head gasket also check to see if the valves are closing proper