dtycoon
10-15-2004, 09:44 AM
Good Day Everyone.
My 400ex blows black smoke when i rev the motor. It is only when i quick rev it. If I am taking it easy or cruising around there is no smoke. I have not noticed any reduction in power. My carb has no choke and I am running a 42 pilot jet. There is a K&N filter. The pipe is stock. Is this just a jetting problem, or could it be more serious? Your input is greatly appreciated. Thanks in advance.
My 400ex blows black smoke when i rev the motor. It is only when i quick rev it. If I am taking it easy or cruising around there is no smoke. I have not noticed any reduction in power. My carb has no choke and I am running a 42 pilot jet. There is a K&N filter. The pipe is stock. Is this just a jetting problem, or could it be more serious? Your input is greatly appreciated. Thanks in advance.