Results 1 to 2 of 2

Thread: 450 backfire

  1. #1
    Join Date
    Feb 2006
    Posts
    1

    450 backfire

    what would make a yfz450 backfire at hi rpm. also what could make a raptor 660 make a noise in the tranny when it is about to stall. when it makes the noise the reverse light flickers

  2. #2
    Join Date
    Oct 2002
    Location
    Chi-Town Illinois
    Posts
    1,078
    try adjusting the air/fuel mixture ratio. My trx450r had the same problem and that fixed it.
    04 Trx450r: totally modded
    KTM450sx,400ex, cr250, xr100,
    Triumph Daytona 675, YFZ600r sport bike

    Thanks To...

    IMS Products
    AC Racing
    Flex Bars
    Lonestar
    Cycra
    Spider Grips
    Laker Custom Plastics

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •