exrider2002
05-05-2004, 07:06 PM
I have a 2002 400ex, elevation 500 feet, temperature 60, hmf slip on, k&n airfilter with precharger. I'm running a 185 keihn main jet (i thought this would be way to rich but i'm getting a nice light tan on the plug) 5 position on dynojet needle (also thought this would be to rich) 2.5 turns out on mixture screw stock(38) pilot.
At idle to 1/4 throttle the quad is running like crap. And the plug is black. After 1/4 throttle it clears up and the plug has a light tan color to it. The mixture screw and pilot work a idle to 1/4 throttle right. So if anything it should be running lean at the stock setting from idle to 1/4.
So does anybody have an idea what the problem might be:grr:
At idle to 1/4 throttle the quad is running like crap. And the plug is black. After 1/4 throttle it clears up and the plug has a light tan color to it. The mixture screw and pilot work a idle to 1/4 throttle right. So if anything it should be running lean at the stock setting from idle to 1/4.
So does anybody have an idea what the problem might be:grr: