Gregarious57
New Member
- Mar 29, 2021
- 8
- Boat Info
- 2007 Sea Ray 520 Sean Bridge
- Engines
- Cummins QSM-11
Interested in input and thanks!
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Does it happen when the Engine Sync is activated?
Under the helm. The throttle levers are cabled to potentiometers and idle verification switches. Those assemblies are mounted on the left side of the helm in metal brackets. There is a port and starboard assembly. You might try and swap the two to see if the issue follows to the other engine. Easy to change.
Also make sure the C-Cruise is disabled and turned off.
Another area is to look for wiring issues on the engine's sensors; but that would normally show up as a fault on your Vessel View.
But, then there could be an intermittent electrical connection to one of the fuel injectors. Easy to access and look at; remove the valve cover and check/verify all six wire connections to the injector solenoids.
The only other thing to look at is the injection pump - there is a flying weight fuel governor that shuts down fuel on an over-rev condition. If it is malfunctioning it could cut RPM.