Chrism0923
New member
I’m posting here again hoping someone can help me. A little over a year ago I had a new powerhead installed. Since getting it back the motor cutouts stumbles and stalls when giving throttle but runs fine once on pad. We have checked spark compression installed new O2 sensor because it was giving a wrong reading when the boat was running cleaned the port out check fuel pressure injectors low pressure pumps VST fuel lines even tried a new ECU to no avail. Can someone give me any ideas on where else to look? I was curious if it could be the TPS and what the settings on it should be. Any help would be greatly appreciated