I got cut off in a twisty the other day, and went to hit the horn, but screwed up and hit the starter. The bike reved pretty high, but it was only for like a second. After that, the bike started having trouble accelerating. I go about 3 blocks, then it backfires, and everything is back to normal. About halfway home though, I start smelling exhaust coming up from the engine compartment whenever I'm stopped at a light. It's been a few days, and hasn't gone away, though the intensity varies greatly. I inspected the manifold all the way down, and can't find any holes. Ideas?

 

Check and make sure your plugs and carb fittings are tight.

 

Yeah, both are tight, I reseated both anyway, just to bee sure. :/ I'm thinking head or exhaust gasket may be blown?

 

Pop the cap on your runoff coolant tank,located on the throttle side of the bike,just above the right rearset.Take a wiff.If you smell exhaust fumes,your head gasket may be done.

 

That's a great idea. Will do.

 

Coolant smelled oK. Came out from lunch today and the smell was gone, but now thw bike sounds like a V-twin; really loud sound from exhaust. Lost a bit of pull off the line, but seems to work OK other than that. Now I'm REALLY worried. :/

 

If in fact you do have an exhaust leak,you will lose some power.Easy fix.

I have a few pipes I'll be selling soon.If you want one,lemme know.

 

Problem fixed itself, somehow. I rode it for about a mile, stopped to get gas, and when I started up again, all was well. Still don't smell the exhaust, so that's good. Still, something is wrong and now the clues are gone. :/

 

Well, it's not stock, it's the Yosh race exhaust, so not cheap. Wouldn't it make more sense to repair it?

 

Yeah,repair is good.Yosh sells can parts so fixing isn't difficult.