Fjfreude
XS650 Enthusiast
Update: I think we have a winner! I dug out my compression tester and bingo, nothing on the left hand side. I realized I didnt do a compression test after I changed out the valve stem seals over the fall. Duh! Its been sitting since then. I hope/doubt its a ring issue, but ill do the oil test to be sure.
Time to try some cleaning (https://www.xs650.com/threads/the-meatball-mechanic-low-compression-fix.11693/) and see if its carbon. I know its not stuck because I can see the valves move in the spark plug hole when I turn the engine. Crossing my fingers that its just not seating quite right rather than a bad seat or bent valve.
Time to try some cleaning (https://www.xs650.com/threads/the-meatball-mechanic-low-compression-fix.11693/) and see if its carbon. I know its not stuck because I can see the valves move in the spark plug hole when I turn the engine. Crossing my fingers that its just not seating quite right rather than a bad seat or bent valve.