Yz 450 Mid RPM bog


1 reply to this topic
  • magiksc

Posted May 20, 2008 - 10:06 PM

#1

So I just got myself an 06 YZ 450 and finally took it out this weekend. As I started rolling on to the power I felt the engine kind of bog a bit in mid RPM range (about half throttle). My bike has the Boyseen power shot in the carb and the bike came from Ca and I'm in Utah now.

Is it just jetting? I'm going to adjust the needle tomorrow cause I think it might be too rich.

Any other ideas on what it might be? Also no other motor mods. Thanks

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted May 21, 2008 - 06:14 AM

#2

Could well be overly rich. A lot of people will go that way in trying to "cure" any trace of stumbling when what they really needed to do is train themselves to roll the throttle. Then they end up causing a new set of troubles from richness.

Useful information would be, current jetting, former altitude, and current altitude.

A number of people report problems of this nature associated with the Quickshot. I don't think it's a cure for anything you might imagine is wrong with the bike. As I recall, they are deeper than the stock AP cover, which extends the duration of the pump discharge, and can make it longer than is desirable. If you have the original cover, you might try that, as well. Meantime, be sure that the discharge from the accelerator pump nozzle does not strike the slide.





Related Content

Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo

Is it worth it? (Cam and High compression piston) by macgi77


Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies
Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 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.