RPM gradually Slowed on Port Side Engine

[BlowinMoney2015sx240]

I have a 2015 SX240. Both engines cranked and ran fine for about 10 minutes. Running about 7500 RPMs and then the Port side Engine Slowed to around 6000 RPMs and stayed there. Starboard Engine no issues. Any ideas? Fuel Filter, Throttle cable, fuel pump, spark plug, etc? I know it possibly could be several things just trying to see if anyone else had this issue and what was the cause.

 

[djetok]

I have a 2015 SX240. Both engines cranked and ran fine for about 10 minutes. Running about 7500 RPMs and then the Port side Engine Slowed to around 6000 RPMs and stayed there. Starboard Engine no issues. Any ideas? Fuel Filter, Throttle cable, fuel pump, spark plug, etc? I know it possibly could be several things just trying to see if anyone else had this issue and what was the cause.

I would look at the plugs and change them if you didn't put new ones in at the beginning of the season.

 

[Gym]

I would also check the air filter & oil. Hopefully I dead wrong but water in the oil causes the oil level to rise and could coat the air filter.

 

[BlowinMoney2015sx240]

Problem Solved- Finally took it to the Shop that works on these type boats after I had swapped most things from one engine to the other such as the injectors, coil packs, etc. Turned out to be per the Shop, the Injector Harness was broken on that engine so swapping just the injectors would not have found it.