Stalling at partial throttle

My WR450 stalls often at partial throttle, like when just about to pull away from the lights or when negotiating a really tight offroad section.

What's the most likely cause / solution?

The plug colour when running off idle is pretty dark brown. At anything other than partial throttle there's no drama.

Also, would installing a PMB silent insert be a possible cause of this?


Mine had similar issues and it turned out to be the accel pump diaphragm.

I'm sure it's a carb issue- you just need to track it down.

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