I have a 1997 Yamaha timberwolf 250 2x4 that is giving me trouble. It doesnt run right and I dont know why. It makes a kind of sucking noise from the carb area usually more often when its warmed up than cold. It will sometimes run through it but others will die out and makes me frustrated. I checked the carbs they are nice and clean, it idles fine when its not making the sucking noise, and I cant see any cracks around boots or anything. Please help me, I wanna ride this summer with my friends without it doing this. Suggestions on what could be wrong and how to fix would be greatly appreciated.

 

How well does it run at speed?

 

Thanks for replying, It really depends on how warm it is, it runs fine cold usually but after say 15 minutesit acts up. Sometimes when Im flying around the house it'll happen sometimes it wont, it puzzles me. The other day when I messed with the carb to make sure it was clean it seemed to get worse and would make the sucking noise and die. On top of all this I have to always jump it to get it started when it dies because my battery is dead

 

I think you have a small hole in the carb gasket or intake tube! Its worth taking a look at.

 

the rubber ring gasket on the carb itself on the side nearest the engine?

 

I am not that familiar with the Timberwolf sorry to not be of much help. Hopefully someone that knows can chime in to help you!