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View Full Version : Wierd 400ex Carb Problem



r-exrider0003
02-20-2005, 07:16 PM
Well, my friend was ridin one day and he pulled in the clutch to shift, and it had no pressure. So a couple weeks later we took it apart and found that it was a broken clutch lifter pin, a $6 part that is alot more trouble than money.... Well he orderd the clutch lifter pin, and a new gasket from the local shop, it finaly came in like 2 months later, and the fourwheeler just sat the whole time... We got it all back together and it wouldnt start, and after a few cranks it would backfire really bad, then next try it would start. so he rode it home and the next day it wouldnt start and it backfires once or twice and wouldnt start at all... he got some fresh gas and draind the old(oh and he put a fresh spark plug in it the night b4) but he put the gas tank back on and turned the line on and the gas just went right out the overflow line??? dose any one know what is the matter with this 400ex? o and it is bored to a 426 with a hotcam stage2, a K&N, big gun race,and hardend rocker arms.... any ideas?

buddy what not
02-20-2005, 08:03 PM
it sounds liekt he float is stickin and maybe it has dirt in the carb ? id check that over