DF 175 missing at cruise

[blbaker88]

I have twin 2018 DF 175 set up, engines are at 100 hours each. The starboard engine has recently began a slight miss at around 4000 rpm. The obvious symptoms are a slight sound similar to a muffled back fire and you can see the engine shake ever so slightly. Only a few times has it been severe enough to feel in the performance of the vessel. The C10 gauge alarm history indicates a 2-4 code that was acknowledged. I do not recall this alarm occurring but the alarm for the 100 hour oil change notice had just started so in bright sunlight, I may have thought it was the oil change alarm and acknowledged without reading. I will be taking it to the dealership that installed but wanted to get some opinions ahead of that visit. Any thoughts or obvious issue that could be the culpriit?

[artdf175]

you might check fuel hoses to see if everything is tight and not leaking air into system
check condition of fuel bulb -- if it is collapsed the fuel tank may not be breathing correctly and creating a vacuum that basically is starving fuel
might check the spark plugs to verify no damage
Art