400ex header pipe turns bright red! need help [Archive]

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660r2a400ex

11-14-2003, 10:30 PM

y is my headers turning bright red hot, i am running synthetic oil, its cold outside, i run 93 gas, my bike is all stock, i have an extra light hooked up underneeth my frame to the brake light, its opne of those neon underglo car lights. why is my pipe overheating teribally

ReconRider25

11-15-2003, 07:43 AM

did you make any jetting changes for the cold weather?

chrisc

11-17-2003, 05:30 PM

too much gas , did you turn the choke off?

hondafox440

11-18-2003, 03:22 PM

Actually its too little gas. Lean jetting.

11-19-2003, 05:04 PM

Originally posted by hondafox440
Actually its too little gas. Lean jetting.

Yuuup.

AtvMxRider

11-19-2003, 05:07 PM

Originally posted by hondafox440
Actually its too little gas. Lean jetting.

yup

MOFO

11-19-2003, 07:22 PM

Originally posted by hondafox440
Actually its too little gas. Lean jetting.

yup

..3rd times the charm. :D

knighttime

11-20-2003, 02:02 PM

Originally posted by hondafox440
Actually its too little gas. Lean jetting.

yip :eek2:

cals400ex

11-24-2003, 02:36 PM

if they glow at idle, turn your fuel skrew out some. if they glow between 1/8 and 3/4 throttle, your needle is a little lean. if they glow at full throttle, go up on the main jet.

polabareus

11-26-2003, 09:00 PM

the fuel screw is the one thats on the bottom (not the very bottom) right?

cals400ex

11-27-2003, 07:19 PM

the fuel skrew is on the very bottom of the carb. it is rather hard to get too if you don't remove the carb. it is actually right behind the idle skrew (silver flat head skrew on the bottom left side of the carb) when looking from the left side. this fuel skrew is bronze and it is not on the side of the carb, but on the bottom.