Ok so my brother bout a 400ex with some work hot cam hmf exhaust and some other things.
it's fouling out plugs in About ten minutes, there pitch black all the way down the insulator there not wet though.
My first thought was jetting but the quad pulls through all the gears perfect no bog or miss to it. I haven't been able to tear into it yet so what would be a good starting point any help would be appreciated
it's fouling out plugs in About ten minutes, there pitch black all the way down the insulator there not wet though.
My first thought was jetting but the quad pulls through all the gears perfect no bog or miss to it. I haven't been able to tear into it yet so what would be a good starting point any help would be appreciated
