Kim:
His post was more then 6 years ago. He may or may not still be here on the Forums. I have two Evo engines with one of them 10 years old and the other 9 years old both with a couple hundred plus hours on them. Both extremely reliable. The older engine, I did just go and buy a new flight pack, ECU, pump, starter, and valve. Wore the first set out. I would suggest that you check all of your connections. Reset the ECU to factory new in the memory. Relearn RC. And, make sure that you are using oil in the fuel. Otherwise, Claudia and Arno are very helpful and simply return it to them.