2004 is pre ethanol right? Any of your internal fuel lines could be suspect, in addition to fuel lines outside the motor. A little fuel line hardening quickly leads to high rpm air leaks. Also those "lined" fuel lines can cause all sorts of problems and likely were required by the epa as a way to frustrate people into buying new fourstrokes....
Did you read the guys issue, or just see "boat motor problems" and just give your diagnosis?
