Posted August 21, 2004 - 06:38 PM
i bought a 99 wr400 have changed throttle stop,opened up airbox,put on a stock yz pipe.all jetting is stock.i ride 500-1500 ft, 60-80 temp.need jetting suggestions.
Posted August 23, 2004 - 02:57 AM
Posted August 23, 2004 - 03:27 AM
Does it pop and backfire when you decelerate?
Does it bog down when you accelerate?
Have you pulled the plug and inspected the color of it?
Adjusted the fuel screw?
A little more info and we can probably come up with some suggestions.
Posted August 23, 2004 - 04:52 PM
Posted August 28, 2004 - 06:41 PM
Posted August 28, 2004 - 06:57 PM
FACT: Thumpertalk was conceived on the lack of knowledge of the carb on the 98/99 WR400 >> this IS absolutely true!!
JD (James Dean) was one of OUR carb guru engineers working out the jetting issues of his 99 WR.
After MUCH R&D, he has designed his own custom cut needles. His kit somes w/ two needles and several main jets AND instructions to jet properly.
Posted August 29, 2004 - 03:00 AM
It is fast right?
Oh and if you feel like investing the money for it, they say the JD kit is night and day over the stock stuff...
For my needs I think the cheaper stuff will work fine. I don't race it.
Posted August 31, 2004 - 02:41 AM
Posted August 31, 2004 - 12:31 PM
Posted August 31, 2004 - 06:04 PM
Posted August 31, 2004 - 06:18 PM
Posted October 09, 2004 - 05:36 PM