My WXC 350 has low compression, about 90psi. It is very hard to start. When I can get it to start, one of the header pipes glows cherry red. I'm wondering if I have a burnt exhaust valve and if it could cause the my loss of compression? I'm going to start tearing down the top end and have a look.
I was wondering if compression release is not letting intake valve close completely? Is the cherry red pipe on the same side?
I checked the compression release and it is not holding the valve open. I also checked the valve clearances and they are within spec. The cherry red pipe is on the other side.
I did a leak down test and it is leaking pass one of the exhaust valves. I went and bought a better compression tester than the one I had. I rechecked the compression and can only get 110psi. Looks like it is time for a valve job.