98 wr carb questions

2 replies to this topic
  • thriller

Posted April 18, 2005 - 08:43 PM


I have a 98 wr400 and have a few carb questions, first on the LH side of the carb there is a bypass valve or something that is between the hot start plunger and the intake - What really is it and what does it do? My 99YZ 400 does not have one. :naughty:

What is the starter jet for? Is it what controles the amount of fuel going through the enricher circuit when the knob is out? :naughty:

I have went through the carb a few times now and still have 6" flames that come out of the exhaust if I was to rev it up in neutral and then let off the throttle. It does not idle that great.
I am running

PJ 45
SJ 85
MJ 170
PAJ 75
MAJ 200
jet needle obdtm with the clip 3rd from the top
fuel screw at 2 turns out
I ride from 3000 to 6000 feet, the temp now is about 10 degrees C.
I have the fmf powercore and the airbox lid is on
the guy before me must have removed the throttle stop.
I don't know if the grey wire is hooked up or not?? :D
I have wr timing


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  • thriller

Posted April 20, 2005 - 04:54 AM



  • firezwr426

Posted April 20, 2005 - 01:15 PM


post in the jetting section... your sure to get an answer there... :naughty:


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