VMax 150 Running Rough

[wilbur5118]

I have a 2008 VMax 150. Stored it last year in great running condition. Boat is heated garage kept. I put stablizer and ring free in the system. This spring I took it to my local dealer he changed plugs and general maintance. Went to Guntersville ran the boat everything working great. Got back home in Indiana and engine started stalling at top end. You can run the boat without problem until you 5000-6000 rmps. Then the engine cuts in and out. I never lose power but it stumbles. Once you back the engine off it runs fine. I again changed plugs, changed the big fuel filter. Dealer is at a lose. Does anybody have any ideals.

Thanks

William

[mitch]

Has the vst filter been cleaned on the high pressure fuel pump

[boats.net]

May be hitting rev limiter, have a fuel restiction and if a VX150 or VZ150 knock sensor may be detecting a knock.

[wilbur5118]

I've changed the VST filter. As far as the rev limiter goes, I've never had a problem running like this in the past. If the rev limiter is anything like a car, this isn't it. Any other suggestions I should try?