good find ,, but loose part in can was more then likely plugging off the outlet, learned the hard way after I replaced a motor once ,, ALWAYS check the can, run fine no top end
good find ,, but loose part in can was more then likely plugging off the outlet, learned the hard way after I replaced a motor once ,, ALWAYS check the can, run fine no top end
The expansion chamber goes into the can looked completely normal and it was not particularly loose either. The only reason noticed it is because I removed the can to adjust the chain tensioner and thats when I heard that the down pipe clunking around inside the can when I pulled it out. Ironically I guess I noticed a little bit of exhaust gas leaking from the area where the pipe goes into the can. However after welding the pipe back in the acceleration is so much better. It appears that even a tiny exhaust leak on a snowmobile can really affect the performance. It still idled and ran ok but it lacked a bit of topend. Now it works great. I thought I would share my find since I never thought to check the can and visually it appeared perfectly normal. Even the snowmobile repair shop didn't notice and the stock springs were still holding the pipe and can together. After fixing it by pulling the pipe and I used a vise grip to fair the end of the down pipe so it seated itself inside the indentation and I welded together and now it it hauls ass.