Yz450 won't hot start


4 replies to this topic
  • 2_strokin

Posted October 30, 2014 - 06:18 AM

#1

I have a 08 yz450 that cranks when cold but when hot it almost seems like it locks up. And then I kick and kick and kick but won't start till it get cooled off? Help!!!!! Please

  • ipsullivan

Posted November 02, 2014 - 05:17 PM

#2

Verify that your hot start cable is functioning and that the plunger is not seized. Your fuel/air mixture could be off.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 2_strokin

Posted November 03, 2014 - 06:43 AM

#3

Would that cause it to kill out also?

  • vossman59

Posted November 03, 2014 - 02:38 PM

#4

Check your valve clearances. I would almost bet that your intake is out of wack. This will cause difficult hot starting.

  • vossman59

Posted November 03, 2014 - 02:41 PM

#5

All you would have to do is reshim the valve that is out of adjustment. Not to difficult to do but if you not comfortable I think it costs around $150-200 to have a shop do it. If you do it your self get a hotcams shim kit $70 and your set.





Related Content

Forums
Photo

BIGBORE FOR YZ450F 2006? by Taattie94


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
Forums
Photo

05 yz450f not fast enough by RedeyeYZ


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
 
x

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.