Hey all, just got a 86 trx200sx, there is a small amount of blue smoke when riding, went for a 30 min rip with no drop on oil. There is also what seems to be an oil leak from what I think is the cam cover. Any thoughts?
I would try and do a compression test, or better a leak down test. It will let you know if you piston rings are in good shape, assuming your valve seat well. If they check out okay, then it's most likely your valve seals.