CRAPPY Running 04 450

8 replies to this topic
  • mbuck

Posted June 19, 2006 - 09:44 AM


I've got some trouble!! This thing runs terrible. I just got it back from a couple mechanics and they had given up on it. They believe it's an electrical problem (CDI, stator, coil...). First of all, it has stock jetting, a Ti-4 full exhaust but is otherwise stock. It ran awesome up until about 6 weeks ago and then things went downhill fast. About 1/8th throttle or so, it misses, pops and sounds like its hitting the rev limiter. I hate to buy new elictrical stuff not knowing what is wrong with it, and you can't return that kind of stuff. I would appreciate any input. Thanks

  • fowler175

Posted June 20, 2006 - 04:55 AM


Any decent bike shop should be able to test all of your electrical components.

  • 426motard

Posted June 20, 2006 - 09:16 AM


sounds like a stator, had one go on a 03 crf450, did the same thing. :excuseme:

  • mbuck

Posted June 20, 2006 - 09:53 AM


Thanks...anybody else want to chime in?

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  • 984

Posted June 25, 2006 - 11:13 AM


had the stator go on my 03 450r too.

  • theclone

Posted June 25, 2006 - 11:41 AM


First of all, it has stock jetting, a Ti-4 full exhaust but is otherwise stock.

That might be your problem. I'm no expert, but it sounds like you're lean.

  • mbuck

Posted June 26, 2006 - 07:10 AM


984, how did your bike run as the stator was going out? I'm just curious to see if it has the same symptoms I described earlier. Anybody else feel free to chime in.

  • Ga426owner

Posted June 26, 2006 - 08:12 AM


A yamaha dealership should look at it - that way if they install a new CDI and it does not fix it - you do not pay for it.

  • Diode663

Posted June 26, 2006 - 01:56 PM


Im willing to bet you are lean as well. I had to bump my pilot up to a 45 for hot weather otherwise my bike pops and sputters like you described.

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