Yz250f hard start today but not yesterday?

Alright so my 06 yz250f was starting great yesterday and all last month. First kick no problem. But now today if i give it a few kicks at tdc it'll fire for a split second then die. If i keep kicking it'll eventually start. The left an right intake valves measured to .003 and .0025 but i cant get to the middle ine with my fat feeler gauges. Is the tight valves the problem?

Yes

What are the intake valve spec clearences? .004-.006? And is exhaust .017 - .022?

What are the intake valve spec clearences? .004-.006? And is exhaust .017 - .022?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now