I re-powered in 2019 with a new crate 350 Mag MPI. Ran fine for 30-50 hours last season. On launch, got the 2 beep/minute soft alarm but boat ran fine with normal temp/oil pressure. Over time, began to experience low rpm/idle issues and the alarm has never stopped (still normal temp/oil). The boat will always start from cold but sometimes stall when going into neutral after a run. Once stalled, you need to throttle in neutral (and can smell some fuel in the exhaust) to get it started. It will also stall during the transition from neutral to low RPM as you initiate the hole shot. My shop has asked me to pull the boat off my lake and bring it in for diagnostics, but I'm dragging my feet. I swapped the IAC this past weekend but symptoms/2 beep alarm persist with no change. What are the other probable causes? Block pressure sensor (doubt this since it would not cause idle issues)? Shift interupter Switch? A short somewhere? Fuel pump or filter? I'm willing to throw another part in and hope I don't have to pull the boat. Getting by with the alarm and symptoms but it's annoying.
Boat is a 2004 Crownline 210LX w/ 350 Mag MPI alpha 1 drive.
Boat is a 2004 Crownline 210LX w/ 350 Mag MPI alpha 1 drive.