I have allready had one bearing, this is a faint ticking mainly on acceleration. With or with out load, starts at 2500rpm's, dies at top end, dies at low end. I am less woried about this now. New noise appeared last night, louder, roughr clanking. Only occurs with load, when you let off the gas. It goes away as soon as you give it the slightest amont of gas with load. This is a new one to me. Dont know if it helps, but with the ticking, it is not any louder when the oil cap is removed.