i have a 225 ho E rud 2003 DI year model. I dont have the serial number at the moment. But was wondering what could cause it and how can it be diagnosed. not having any codes. so is it a ignition coil going bad.. bad plugs wires ect.. give me some details to look for. thanks... noticable difference. Are the coils similar to the 04 HO DI motors if so i wil have parts from it soon., Thanks