motogtp
CB750 Addict
I have been struggling with running rich and fouled plugs ever since I got it running. 1978 SS with 6100 miles that runs well with new plugs. I finally ran a compression test today. Dry test #1-80 psi, #2-75 psi, #3-70 psi, and #4-70 psi. Wet test #1-85, #2-88, #3-82, and #4-90 psi. I know these numbers are low but what exactly are they telling me? Bad rings, valves, or both? Either way it looks like I am opening up the top end.