Hi everybody, I have a 1999 yamaha banshee that will not idle. It has a tors eliminator kit installed. Whenever I adjust the idle screws, it doesn't do anything. my mods are procircuit pipes, tors eliminate kit, kn air filter , and the head is shaved 25 thousandths. I have already checked all the obvious stuff and everything seems good. What could be causing this? Thanks

 

A leak down test can tell if you have a gasket,case or crank seal leaking that might be causing the erratic idle.

 

Thanks, but I found the problem, the head wAs warped

 

Yep that would do it too. Glad you found the problem.