high pitch pinging noise

[toker_ace]

i've got this very high pitch tapping noise coming out my engine.it gets a little quieter after it warms up some. the noise stops when i'm going up an incline. like when the motor is under pull or tourqe. i hope its not something worn because this motor only has about 100 miles on it. its really loud. it actually hurts my ears. its like something is tapping inside.more of a tapping than a raddle.

 

[Bikeguy Joe]

Check your motor mounts for tightness...or should I say looseness.

 

[toker_ace]

hey joe. its coming from somewhere behind the clutch cover. If i put my hand over the cover it muffle's the sound some. I think I might put a little grease on those gears.

 

[marioaz]

That may be one source of mechanical noise. With the engine not running and cold, bang on the muffler with the heel of your hand. I discovered the innards of my muffler rattling. It created a high pitch rattling/pinging that you describe, changed with rpm's, and I thought the engine was coming apart.

 

[toker_ace]

thanks. i have a custom muffler, with no innards. its something behind the clutch cover. when i'm under tourque there's no rattling. when i'm at idle and just running its rattle tack tack!

 

[Cabinfever1977]

maybe the clutch is rubbing on the cover.try a second gasket or start it without the cover to see if that is the problem.