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higgy426

tuning question (hey I searched first!!!)

6 posts in this topic

Ok

0-1/4 throttle sputters and dies

to me it sounds like not enough gas

but it could be to much

have paj at 2 1/2, 45 pilot stock needle setting stock main jet wb 8 discs stock header. running at 1000 alt.

I love this site!!!!

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Higgy,

Check your plug, if looks at all too dark change it. Then come in on your fuel screw 1/4 turn at a time till the sputter is gone.

Mr T

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I took the bike for a ride with a new plug and never went over 1/3 throttle when I pulled the plug it was black around the threads and whitish just on the tip of the bend that the electrode sparks to. so what next?

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Check the acc. pump and clean it, if this doesn't work change the needle pos (i would start by lifting the needle 1 clip...

Keep testing and testing and testing

Good luck

------------------

'99 WR400 F, YZ exhaust , throttle stop trimmed, WR timing, airbox cover removed

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Try 2 - 2 1/4 turns out. What year is your bike? Stock needle number and clip position currently?

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