help needed engine heating and smoking
i have a ecx ruckus and i changed the motor pinion gear and the first time i turned it on and applied power the motor wouldn't turn so i loosened the screws and applied power and the motor turned all right but it was a lot quieter than it used to be but the motor lets a bit of smoke out not much just a little i remember it did this when i first got it maybe just running the new pinion in
any advice would be much appreciated