leak down testhow about crank seals how do you know if thier messed up is there a way of finding out without pulling the motor apart? Thanks for the help
+1No need to remove the head to look at the powervalve. The cover on the front of the cylinder covers most of the working parts. If you can remove it without taking the motor out or cylinder off it can be done. But the down tubes are right there. Usually the powervalve is cleaned during a top end. You can use easy-off oven cleaner to clean the exhaust valve parts.