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    2004 5.0 OSI-EF not going over 3000 RPM

    I have a 2004 Rinker 312, with twin 5.0L OSI-EF engines and ocean series duo prop drives with SS props. I took the boat out for my usual start of the season test drive. The boat, while at the dock, ran perfect. while in neutral, I was able to rev the engines all the way up to 5000 rpm. But, then...
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    2004 Volvo Penta 5.0L OSi engines w/ duo props not getting on plane

    I have a 2004 Rinker with twin 5.0L engines with ocean series duo props with SS props. At the end of last season, after not using the boat for most of the season, I noticed that the engines ran fine at no wake speed as I drove out to open water. But, once I throttled up to WOT, I felt a slight...
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    engines dont go full throttle

    I recently had to have one of my shift cables replaced and then adjusted as the shift levers were not aligned. Now, after the mechanic completed that task, it seems my boat will not reach full power. When I throttle up to go on plane, my engines are only reaching about 3300 rpm. (full throttle...
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    Fuel Pump Problems

    I have a 2004 Rinker 312Fv with twin Volvo Penta 5.0 OSI-EF engines and dual gas tanks. since the beginning of May i have been noticing that the boat is very sluggish on acceleration (runs perfect at idel and no wake speeds). As throttle up to get on plane the RPM's barely hit 4000 and it seems...
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    Port Engine starving for gas

    I have a 2004 Rinker 312 Fiesta Vee with twin Volvo 5.0L Ocean Series engines and outdrives. I have two 75 gal fuel tanks that has valves to isolate the tanks or merge them. I run with the tanks isolated, so that the port engine pulls from the port tank only and the same for the starboard...
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