back firring

03 wr 450 , when i close the throttle to slow down my bike backfires.Not every time but a fair bit.Any ideas?

Thanks dave

leaking header.

turn up your fuel mixture screw out another 1/2 turn, should fix it

LOL i love the backfire it keeps SUV's off my rear fender PPPPPPPPPPPPPPPP

nothing like a flame thrower at a stop light P

Not sure of the WR model years, but some bikes had an enrichening circuit on decel that caused this. I KNOW it has been talked about since I've been here, but can't say for sure.

I dont know if the 03's had it but it may be the emissions system. It is not too big a deal, but if you richen the pilot circuits it should go away if you dont have the emissions stuff.

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