Low RPM cut-out

[hardtime]

I'm getting a low-rpm cut-out on my 400ex. The best way I can explain it is when your going up a hill and ya gun it and then ... blah blu bah... downshift and it takes right off. It does it in first on a dead stop to full throttle also so ya sorta get the picture. Any help is appreciated. BTW, its all stock.

[RED121572]

It has to be a carb problem. The only thing I can tell you that will save you from 40 bucks an hour at the dealership........get yourself the 400EX shop manual. Take the carb off the bike and go through your carb to insure all the little do-dads inside work properly. I do that procedure once a year. Its amazing, the places where dirt can get into.

Good luck and let us know what you find out.

RED

[RytM1]

What mods, if any, do you have?

[kicken250x]

he said its all stock read the last sentence

[RytM1]

I knew there had to be a drawback to that damn speed-reading class !!

[kicken250x]

lol good recovery lol

[tprender]

try a new plug as a starting point.

[hardtime]

I have replaced the plug a couple of times with no help. But a quick question, whats the correct gap for the plug?