Jetting issue?

1 reply to this topic
  • jesusmannen

Posted September 10, 2008 - 10:27 PM


I made a thread the other day regarding my bike ran bad in wet conditions.

One of the answers was that it might be a jetting issue.

We have 10-15 degrees C here in Sweden and the humidity is between 70 and 95%, very wet! I ride at sea level.

Here is my jetting

Fuel screw 2 1/2 out.
Pj #45
stock needle 4th clip
Mj 175

My bike has a ported head, quickshot, and a power bomb.

The bike is easy to start and runs like monster from idle to full throttle.
No backfireing or bogging, except from the rainy weather issue.

I see that many of U guys runs #48 in pilot, and I U got warmer conditions over there.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • yamahacrazy_310

Posted September 11, 2008 - 11:24 AM


Well, I live in Washington state and we get a lot of rain. And I'm not that high from sea level. I run a 48 pj and a 170 mj.

Related Content


Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

05 yz450f not fast enough by RedeyeYZ

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


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  30 replies

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

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.