What is this noise?
I’m losing my mind. The motorcycle makes a metal on metal “kssssssssuksa” sound. It makes this noise 100% of the time in any gear and in neutral with the clutch in or the clutch out. Using a stethoscope I cannot locate the source. It’s coming from every part of the engine LOL. I’m serious that I cannot tell if the sound is coming from the heads or the crank or the transmission. I’m a home mechanic and so far I have replaced the primary chain, the clutch pack, and a bearing that was suspected between the inner and outer clutch assembly. Over on the other side of the engine I have replaced the oil pump and the oil pump drive gear. It’s a worm drive and I suspected it was the problem because the timing of this sound seems to be too slow to be a valve or rocker. Any considered guesses is appreciated. I’ll split the case if I have to but dang… I don’t want to. I know it’s a little haphazard to run the engine with the primary cover off but I was wondering if a kink in the primary chain was rubbing against the engine case. Well, no… that wasn’t it either. Help.