When I came home from work midnight Sat. night the bike was running fine but making a knocking noise when I pulled into garage. It was about 35 degrees outside and I have never heard this before. It sounded like it was coming from the rear cylinder or the exhaust. I put my foot on the front of the right slip-on and it would quit. checked the clamps and they were tight and didn't look as if they could be tightened any more. Wasn't able to reproduce it the next day. The engine sounded fine Sunday. Any ideas??? TIA

 

I would take the muffler off, make sure everything is ok with it & all the hardware (may sound weird but some aftermarket & re-worked mufflers have items get loose inside, give it a shake ). How warm was it in the garege?, maybe the sudden temp difference coulda caused some freaky moment ? Damn Gremlins.

Mark

 

Did you accidentally lock your wife outside?

 

Hey, I just replaced her garage door from where she wanted out faster than the door would go up! If she wanted in she'd get in! [sm=bomb.gif]

 

I checked the clamp. baffle, and rear mount. It was the first time it had been outside at that temp and then ridden.

 

Yep, they're never happy!

 

I had that problem with my ultra. check to make sure the slip=on is on all the way. I slapped mine in a 1/4"and my noise went away

 

Check the rubber piece on your kickstand. If that is missing it will knock like that.
JL

 

Stop playing that rap music crap on the scoot's radio[:@]

 

I had a similar problem. My left exhaust would knock and squeak intermittently at idle, especially after riding in rain. Drove me nuts to sit at a stoplight with it squeaking away like some two bit, piece of crap on a bike I paid $20K+ for.....but I'm far more **** about things than most people.
It turned out to be the rubber rear exhaust mount. At first, I would take it all apart and clean it to get it to stop, but it became all too frequent an event for my liking. After time I just made sure to have a couple of new ones on hand, but they always went south fast.
One day I stumbled across a thread on this forum where somebody with the same issue suggested taking the plate that slips through the rubber mount and bolts to the slip-ons, and flipping it upside down. When I did this I felt that it was just a wee bit tighter than it ought to be to allow sufficient movement, especially on the left side, so I took a thin file to the rubber block to give the plate a little bit more wiggle-room.
Problem gone forever.

CN