426 idle problems


5 replies to this topic
  • ezzrigby

Posted May 05, 2008 - 12:24 PM

#1

I have a 01 426 been running badly won't idle off choke at at, striped the card down found nothing but it seems now it will idle off choke still a little rough up and down revs alot, but once i got it to idle i noticed after about a minute the front exhaust pipe went a bright cherry colour. Any ideas? I can't see this being right somehow!!

  • 1998YZ400F

Posted May 05, 2008 - 01:02 PM

#2

ive heard the glowing pipe is a common thing on these bikes and its nothing to worry about.

  • grayracer513

Posted May 05, 2008 - 01:46 PM

#3

You need to familiarize yourself with adjusting the idle mixture:

http://www.thumperfa.../jetting.htm#PJ

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • jayh300

Posted May 05, 2008 - 01:53 PM

#4

come on gray...... you know we need to see it every so often...

  • grayracer513

Posted May 05, 2008 - 02:11 PM

#5

What? Evidence that glowing header pipes are not so unusual?

OK:

Posted Image

  • jayh300

Posted May 05, 2008 - 02:15 PM

#6

that's the ticket !!!! thanks gray, after a long day at the grind, that pix always makes me laugh...
I would still like a ride in it !!!





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