Join Date: Apr 2007
Thanked 0 Times in 0 Posts
If the plugs are white, they are not fouled. Run it and while driving pull your choke a little. If it runs better you are lean, if it runs worse you are either OK or a bit rich. This reminds me, another problem I have run into is the choke plungers sticking. This will cause the bike to run rich.
These things are that finicky, especially the 650s. They are set to the lean side from the factory to meet the tree hugger regulations.
The "something" you are refering to on your vent is a check valve. You could pull it off and make sure it is not plugged. The Brutes have a vaccuum operated fuel pump so the vent is not AS critical, but it still does need to work.
Have you been in any deep water before this happened.
Another thing, check for cracks in the carb boots between the carb and the head.
BF 750, 27" ITP XTR
VDI cdi, Full Muzzy
TwinAir filter and EHS cover
840cc kit and Dalton clutch kit