98 yz dies, need info on fuel screw?!?

4 replies to this topic
  • 97zjguy

Posted February 24, 2005 - 06:14 PM


what's up, i just got a 98 yz 400 that has had an idle problem. i posted here a while back about it and got some different possible solutions. basically, it idles for about 1 minute, then acts like it runs out of gas. but will always start on the first kick after dieing, as long as i use the hot start knob. other than that, it runs good, although, sometimes it will die when immediately cracking the throttle and abruptly let off, like during a tight woods section, which i have heard may be normal, although i have not really got a good explanation for why it's normal. but lets get to the fuel screw. i keep hearing about how hard it is to access this screw, and that it may be the culprit for my idleing problems. my particular bike has a small T protruding from the bottom of the carb, near the drain plug on the bottom of the bowl. is this my fuel screw, and does anybody have any info on why my bike has a T, and others have a screw??
thanx to anyone with some info...

  • sirthumpalot

Posted February 24, 2005 - 08:31 PM


Someone added the T to your fuel screw. There are several after market fuel screw related devices, the T handle is one of them. From what I have read and heard of the earlier bikes, save your frustration and just drop some cash on an Edlebrock carb. Talk to YZFan. I ride with him and from what he tells me the Edlebrock carb is stellar on the 400.

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

Posted February 25, 2005 - 01:28 PM


Are those very expensive ?? I have a '98 400 with the same problem. :)

  • sirthumpalot

Posted February 25, 2005 - 09:44 PM


I'm not sure. Search for posts by YZFan to see which carb he got and how much it was. He got it new on Ebay but I don't remember the price he paid.

  • 97zjguy

Posted March 01, 2005 - 04:14 PM


thanx for all the info everyone, i'll let you know how everything works out.

Related Content


2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

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

Is the 2016 GYTR Yamaha YZ450F too fast? by Fryboy

Dirt Bike   Special Interest Forums   Pro Racing
  • * - - - -
  • Hot  241 replies

First Hare scramble tips by dhend8

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies

yz400f throttle bog by yz400fmaniac

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • * * * * *
  • Hot  28 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.