2000 426 Starts then quits


12 replies to this topic
  • ROBCAR

Posted December 04, 2009 - 02:47 PM

#1

When I try to start the 426 it fires up and idles for 2 seconds and then quickly dies. Start it again and the same problem over and over. Will not idle for more than 2 seconds. Choke on or off doesn't matter. Thinking maybe a carb problem. Any help would be great.

  • ROBCAR

Posted December 07, 2009 - 03:01 PM

#2

must be the new 2010 yz450 has got all the attention

  • grayracer513

Posted December 07, 2009 - 03:40 PM

#3

And nothing you do with the throttle will keep it running?

  • ROBCAR

Posted December 07, 2009 - 05:19 PM

#4

nope nothing

  • l_campionero

Posted December 07, 2009 - 06:03 PM

#5

Has it been left sitting with gas in it for any length of time?

  • ROBCAR

Posted December 08, 2009 - 09:54 AM

#6

Yes, do you thing a lengthy carb clean might do the trick?

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  • grayracer513

Posted December 08, 2009 - 10:33 AM

#7

Probably that, and get rid of the gas itself. In fact you might try fresh fuel first. I've seen gas so stale it wouldn't ignite with a match.

  • fishnutz

Posted December 08, 2009 - 08:53 PM

#8

Change the plug, get some fresh 91 or better octane fuel, and go ride.

  • matt4x4

Posted December 09, 2009 - 10:39 AM

#9

recently fixed a kid's 08 yzf at the track - everyone was scratching their heads standing there (funny how many can ride but not wrench) - same issue - it was some crud that was in the bowl, 30 seconds and he was off like a banshee.
A season of riding will do that no matter how careful you are with filling your bike.

  • l_campionero

Posted December 09, 2009 - 10:44 AM

#10

Yes, do you thing a lengthy carb clean might do the trick?


It surely wouldn't hurt. Keep away from automotive carb cleaner. If you use it keep it off of rubber parts as it makes them swell.
Here's what you need to use for best results:
Posted Image

  • grayracer513

Posted December 09, 2009 - 11:56 AM

#11

Keep away from automotive carb cleaner. If you use it keep it off of rubber parts as it makes them swell.

That can be true of automotive carb dip type cleaners, but generally not of carb cleaner sprays. It's certainly not true of Berryman's B12.

  • ROBCAR

Posted December 09, 2009 - 02:59 PM

#12

Thanks guys, Will have some time this weekend to give the carb a good cleaning. Will let you know what happens..

  • flintlock28

Posted December 09, 2009 - 03:10 PM

#13

Pay special attention to the Pilot Jet....it can easily clog.





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