01 challenger right engine issues

[CognitiveDiggs]

Hey all first time here! I have a 2001 challenger 15 the twin rotax one, boat starts fine when I get it on the water the right engine doesn’t like to go over 4krpm the left engine will tach out no problem and once in a while the right engine will go over the 4k range but doesn’t stay for long or just dies out, I can start the right engine up with no issues again just doesn’t like to go over the 4k mark… any suggestions would be appreciated thanks again!

 

[CognitiveDiggs]

Bump if anyone has a suggestion

 

[Spider4real]

To me it sounds like it might have a fuel restriction. Carbs might need cleaning. But I would check engine compression first since it's a quick and easy test.