Carver Owners Forum

Good afternoon all. I have been posting about my Cummins QSM11 engines not reaching full RPM. Specifically on the starboard side. I have had Cummins techs replace the starboard ECM and verified the engines are in good shape. This weekend I had a very strange incident. While starting the engines, after pressing the button on the throttle control, I tried to start the port engine first. When I turned the port key, the starboard engine started then the port started when I turned the starboard key. The port engine has not been wanting to start and I have been holding the button down while I turn the key to get it started.

Just two new symptoms to add to the lack of RPM on starboard side. Any ideas? I will be looking into switching the connections

Not sure about those specific engines or the ECUs, but when weird things happen like that it frequently points to a poor ground somewhere.