2005 Yamaha WR450F - Put FMF on exhaust and bike was running lean at the beginning. Took into repair and now 6 inches of pipe is glowing RED. Replaced coolant "per bike shop", and quess what? IT DID NOT WORK! Melted side plate I just bought "UFO" really ticked now. Any idea's? Thanks for help.
Try a bigger jet or its going to cause some damage. You can pull the choke on to get some more fuel in to cool it .
Check that the cam timing hasnt been played with, some change the exaust cam by a tooth to copy yz specs, on top dead centre, there is a little arrow on each cam that lines up with the rocker cover surface
1,397 views
Usually answered in minutes!
×