Shaun Quilty
New Member
I have a 2006 38' Sundancer I was having a problem with one engine burning more fuel. I found a spark plug wire off and another half off. It would be worth checking
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I have a 2006 38' Sundancer I was having a problem with one engine burning more fuel. I found a spark plug wire off and another half off. It would be worth checking
Getting back to WOT, the OP needs to warm up the engines then disengage the synchronizer and run the boat with both engines running at full throttle. He should then report the top ROM acheived by each along with load percentage.
I don't know about Cummins, but CAT also has a spec. for bare high idle. This is the RPM the engine should acheive at WOT throttle with the gear in neutral. If Cummins provides such a specification, it can help to diagnose if the problem is engine related or gear/shaft/suffing box/prop related.
Ah, OK. I'm just vying for the stupid post award. I would think the electronic governor would allow the engine to spin up higher in an unloaded state. They don't seem to allow much leeway in propping assunming rated WOT is 2300.
At cruising speeds, it seems like a linear relationship with fuel flow. In my case 100% = 50 GPH (combined), 80% = 40 GPH, 60% = 30 GPH. Depending on the conditions (load, etc.) the same RPM will be associated with a different fuel flow and thus a different "% Load". This is only an observation, I don't know this for sure.I have no idea what parameters go into the "Engine Load" number on the electronic display