I ran a pt6 in a pt3 setup motor to see what whould happen it didnt run right so I put the pt3 back in now everytime I let the cluch out and let off the gas it staws everytime. My engine light is not on and it also spits and sputters and backfires when Im in gear slowing down what the hell happened to my nice,smooth running honda? If anyone can figure this one out I'll have my wife blow blow em!