Well, now it is sounding like more then carburation. I would follow suit with the kill switch and also check the spark when it is cold...then run the bike...pull the plug...check spark....see if it is as strong as it was cold. Could be a coil issue too....but that is one test for ya to try....


AirBorn!!
The good Lord giveth and the Eco-Nazi's Taketh away!
United we stand..Divided we fall..LETS UNITE!

 

Check the Air filter see if it's dirty
Check your spark plug. see if it's wet
When it's wet check your jetting (main jet) 390 (400)
Sea level conditions, humidity 60%
Check the air screw 1 1/4 out
Check gas needle 1/2
Check the Power Valve
check CDI (read owners manuel)
When you can't find any problems what so ever go to a specialist.

But first remove your kill switch!!!
Hope you'll solve your problem.





Dijon,
Let's kick some dirt
"WHEN THE GOVERNMENT FEARS THE PEOPLE THERE IS LIBERTY; WHEN THE PEOPLE FEAR THE GOVERNMENT THERE IS TYRANNY" -

 

ya i checked the kill switch and its not that. im thinking it somehow might be the carburator because before the bike wouldnt run at all then i cleaned the carburator out then it ran for a day then had the same problem. could something have a hole thats letting dust into the carburator?

thanks

 

check the aircleaner...are u oiling it and cleaning it regularly??? this is a common issue....


AirBorn!!
The good Lord giveth and the Eco-Nazi's Taketh away!
United we stand..Divided we fall..LETS UNITE!

 

yep cleaned the air cleaner before i
Coo to go camping.

 

hmmmm....well it sounds like I would check the carb again. If it is dirty again then you are somehow pulling dirtinto the carb from somewhere and then at that point start looking at the boots and seals for cracks...even small cracks may cause this issue too...


AirBorn!!
The good Lord giveth and the Eco-Nazi's Taketh away!
United we stand..Divided we fall..LETS UNITE!

 

ya im going to clean the carb again and use carb cleaner and if this doesnt fix it im gunna sell it and get a yz400 or yz426