Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0

carb probs, 2003 WR450 lengthy sorry

3 posts in this topic

Hello all...I'm very baffled at the moment on this one.

This bike sat for an unknown length of time with gas left in it,

tried to start it....no luck. Drained carb bowl, and tank.

Put fresh gas in tank, and bowl would not fill back up. It sat overnite,

thought i'd try again in morning. It started right up , ran a little rough

but then gas started coming out overflow. took carb off super cleaned it, reassembled made sure needle was shutting off fuel. ran great .......:)

took it out today ....it ran super....idle kept raising a couple times....

went 8 miles or so and it strted leaking gas again out overflow tube,

if you plug that with finger, after 30 secs or so gas comes out the vent tubes.

still ran great the whole time.........is the needle tip bad? could the bowl overflow tube have a crack?

on the bottom of the carb is a brass screw with a t handle end...is that the mixture screw? how many turns out? i never changed the float level or drop.

I can ride it bud jeez a full tank lasts a half hour......:ride:

Help please........

Share this post

Link to post
Share on other sites

Sounds like the float is stuck or the needle and seat are bad. Maybe the float linkage is gummed up. The seat is easy to test. Just move the float by hand and see if the flow stops.

The screw you mention is the pilot (fuel) screw. Start at 1.5 turns out and tune from there.

Share this post

Link to post
Share on other sites

It probably is a bad float needle seat oring.Remove the float and needle, place yor finger over it and see if fuel still leaks past.

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