Bike stalling

2 replies to this topic
  • rmracer27

Posted May 10, 2005 - 04:09 PM


Hey guys my 05 yz450f is stalling when I give it a quick twist of the throttle,not all the time. I'm running Rekluse and all my adjustments are correct with it and the install gap has been checked twice to make sure it was correct. I can feel it disengaging! When I go to get back on the gas sometime it will just shut off. Usually starts back up on first or second kick. I'm running stock jetting with the pilot screw out about 1 turn more than it was from factory. Bike also has a pro circuit t-4 slip-on. Everything has been running great but I noticed this when I installed the auto clutch. I'm kinda leaning toward jetting.Bike has around 20hrs on it. Any ideas would be great guys...


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

Posted May 10, 2005 - 04:25 PM


It depends on: how low your idle speed is, and; how hard you're twisting the throttle. I see your screen name is RM Racer, so I assume you're a recent convert from 2-strokes. You may need to learn a little finesse. Rolling the throttle on, instead of snapping it open instantly, is the way to go. You just have to open the throttle a little more gracefully in the first quarter turn, allowing the RPM's to build a little, and turn the throttle faster as the revs rise. Once you learn it, it will sound just as snappy as anything, and you'll be doing it as second nature.

If you still think there's something that needs to be done to the bike, do a search for accelerator pump mods. There are a couple running around the site. Be sure the mod is for your bike, and don't go by how it acts in neutral (timing's different).

  • rmracer27

Posted May 10, 2005 - 04:36 PM


greyracer513...You right about the 2 stroke part,I am a recent convert from a 2 stroke. I guess I was use to the quickness the RM had when I could go from idle to full wide open and not cut out. Thats what I'm use to and thats a habit I'm going to have to break the way it looks. The next time I ride I will do what you said and see how that goes. Later down the road I might put the accelerator pump cover on from boyesen,hopefully that will help out. Thanks for the help!!!

Related Content


Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies

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

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