Question about 2004 Yamaha YZ 450 F
You have an air leak after the carburetor. Old, cracked rubber fittings between carb and cylinder will let air into the manifold causing a lean fuel/air mixture. Same is true of "O" rings and gaskets. If there is a leak in the head gasket that will lean the mix also. Fix the air leaks and you fix the problem.
A “very helpful” rating for this answer? Thanks!
Posted on Jul 02, 2009
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jul 07, 2014 | 2006 Yamaha yZ 450 F
Apr 04, 2014 | 2003 Yamaha YZ 450 F
Mar 01, 2014 | 2007 Yamaha yZ 450 F
Jan 14, 2014 | 2004 Yamaha YZ 450 F
Jul 21, 2013 | Yamaha YZ 450 F Motorcycles
Sep 27, 2012 | 2004 Yamaha YZ 450 F
Jun 25, 2012 | 2004 Yamaha YZ 450 F
May 25, 2012 | 2002 Yamaha YZ 426 F
Feb 26, 2012 | 2007 Yamaha yZ 450 F
Jun 20, 2018 | Yamaha Motorcycles
806 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: