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View Full Version : Jetting - Help me im stupid



Fuchs42
07-22-2003, 02:27 PM
Ok, I've done it. I bought a 400ex carb for my 300ex and put it on... I just bought a 350x boot, but I couldnt wait.. So i went to lowes and bought a Fernco, 2inch vinly tubing, and a pipe clamp and used my old Carb boot to make A new one that fits the 400ex carb! I did it i made one and it doesnt look too bad.

But thats not the problem, The problem is that When i nail the throttle it dies and then delay and comes back to life, WHen i rev it out all the way and let off Blueish Grayish White smoke shoots out. Its kinda not a thick smoke Just a little And my engine is hotter then Hell When i shut it off... Any clues.... I think im Lean?

Someone said 150 main someone said 146 what do i do? Any help apprectiated.. .Thanks


IM me on AIM me for pics of my hillbilly carb boot

Fuchs42
07-22-2003, 03:12 PM
please help :C

Sparky416ex
07-22-2003, 04:06 PM
hey man...i have a 152 main jet and i think 42 pilot...lemme get back to you on the pilot...i jetted it at 152 because it ran good with and without the airbox at 152....if you run with your airbox off all the time use a 150...i hope you didnt hurt your motor...a bike that lean can really mess stuff up!


its kinda crazy that my 330 sucks more gas than my 416:D