Fouling plugs

[Rickman769]

I've used 3 plugs in the last 2 day i keep fouling them but my engine has no smoke and i running cool
i thought i might have been too rich but theres no smoke

 

[Nitroaddict]

look at the plug. If the coils are white, ash colored, or broken - then the engine is running too LEAN.

 

[robriguez]

If they are black and/or oily then its way too rich

 

[TRDStreetFighter]

plus you might be using the wrong plug... I use McCoy 9... the duratrax Gold are no good...

 

[RobH]

because you don't see any smoke, I'd guess that you're running it too lean. What tempurature is "cool"?