Originally Posted by
hyperfuxx
The top of my piton is black and so is the bottom of my plug. Motor might have 1 1/2 gallons threw it. What does this mean? Seems to be running fine but I'm worried about damaging the motor. Also is there a way of removing the build up?
Originally Posted by
Maximo
that is normal, and actually a good sign your fuel has caster oil in it......
if you get the erge to clean it....dont! send it to Maximo or someone who knows what their doing. ive run nitro for a few years now and hate taking them apart. i would rather sent them in and pay a couple bucks to have them looked over, then take them apart and waste a 250+ engine.