Sign in to follow this  
Followers 0
bluebike1999

WR426 missfire in mid rev reange

2 posts in this topic

a mate just rebuilt his bike, piston kit, new cam chain etc and the 3 inlet valves.

Just prior to the rebuild it had the missfire in the mid range, if you really gassed it it would 'break through ' and go hard, but just going up the revs it was missing quite badly at what i'd guess about 4000rpm... it was put down to the poor condition of the valves .....

we checked all the jets etc, the bike starts a lot better than before (new valves) and feels better/stronger while not missfiring.

the carb has had some crap in it and the next job is to inspect it and clean it out.. the hotstart plunger was gunky, but has been cleaned...

does it read as a fuel problem or electrical?

Share this post


Link to post
Share on other sites

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
Sign in to follow this  
Followers 0