Di a compression check on the motor to see if there is any leak. Cold should get you about 120 PSI or so. These bikes always make racket in the top end, that's just what they do. There is such thing as too much though. A compression check will at least isolate a valve seat or ring issue. If it checks out, you can eliminate those. Take off one of the rocker bolts on the head and turn the bike over with the kill switch off. Preferably on the left (drivers side) of the bike. You should get some oil leaking out. That let's you know that the top end is getting oil. When you check valve clearance, you are doing it by the manual, correct? They won't register if not read from the correct place through the timing cycle. Also remember that the pensioners mechanism on these bikes can get seized, so no matter how much you " adjust" the chain tension you may be doing nothing. If it is you can free it by pulling the plug bolt above the tension adjuster, loosening the adjuster bolt, and sticking a small screwdriver into the upper hole and tapping with a screwdriver. This should unseize the adjuster mechanism.
I have 3 of these bikes. They are my all time favorites, but the are quirky old girls!
Sent from my ADR6300 using Tapatalk
I have 3 of these bikes. They are my all time favorites, but the are quirky old girls!
Sent from my ADR6300 using Tapatalk