So my challenger 1800 fires up first shot both engines which I think means good compression , but as I approach 4500 rpm on the starboard side the engine seems to want to choke out and die. Recently had carbs rebuilt and put in new rave valve in, cleaned others. Could this be my rings or something. Plugs seem dark and wet as well. 
I hope someone out there knows about this. This boat is one thing after another.
I hope someone out there knows about this. This boat is one thing after another.
