frustrated wr 450 owner help

Getting sick of working on this bike had it running and now just idles for a bit then starts popping and stalls. What are the simptoms of a dead brain/cdi cause this things is making me crazy. changed stator ran good for a bit now same shit... thanks need help...

Going back to carb seems it must be something there, could the fuel mixture screw go bad and not seal anymore.....

Going back to carb seems it must be something there, could the fuel mixture screw go bad and not seal anymore.....

The o-ring can dry out and crack. But with mine a 10 degree temp change and humidity change will warrent a little fiddling with the fuel screw to get it working properly again.

fried CDI = no worky

when they go bad, they normally stop working altogether

have you had the carb apart and cleaned it all

clogged pilot jet normally results in idling issues

not worth cleaning, just get a new one

fried CDI = no worky

when they go bad, they normally stop working altogether

Normally, but not always.

Stick your CDI in the freezer for 3-4 hours. Remove it and immediately plug it in to the bike and see if it runs better. Thermal intermittants (usually bad solder joints ) are not uncommon on CDIs.

Just so you guys know it was the coil the whole time so glad the bike is back to running normal. It was so intermitent had to diagnosis. love this forum!!!!

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