ORIGINAL: nitro engine
ok so first what you should do is take the glow plug out and take out the rings that should be inside,there should be a way to look in the motor ifyou shine a flash light in it and there are seals that could be busted if that is your problem your looking at paying any where from 50-80 dollars to get them replaced or get a new motor........................ or you can take it in where you got it and pay 5-8 dollars for them to check for anything.
Hope it helped!
the hobbyplace where i live charges25$ and hour. when i got the rc back they guy said oh ya i got it fixed just when you want to go full speed you have to go to half throtle then go all the way to full throtle u have to go very slowley. if a person that had been in the hobbie bussiness for years can't fix it, then i really don't think that i can.I CANNOTwait till this engine blows. where are the seals so i can check them.