yz 426 throttle shaft sticking at tps

No replies to this topic
  • yz426ryda

Posted January 16, 2013 - 08:33 PM


2002 YZ 426 stock everything except for auto decompression exhaust cam from hot cams

I completely rebuilt my carb and am know experiencing the throttle sticking. The problem does not appears to be with the spring, throttle tube or cable. The trottle shaft seats into the TPS and when it does the throttle shaft then becomes sticky, it still moves but the spring does not cause the throttle to snap back. The throttle can be easily be reduced by hand however as it is just sticky, not stuck. If I pull the throttle shaft out a little, from from the TPS boot, the throttle snaps back as it should.

Any ideas?

Is there a particular type of lube that should be used inside the TPS where the throttle shaft seats, if any?


Related Content


Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

The "going back to the other darkside" adventure... by Monk

Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  113 replies

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.