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03 196 Losing Power at Higher Speeds

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  • 03 196 Losing Power at Higher Speeds

    I have a 2003 196 with an Excalibur 330. When I run the boat at trick ski speeds (17-19 mph) the boat runs great. However, when I run the boat at slalom speeds (30-36 mph) the boat has issues after running for a bit. Generally the boat will get the skier up fine, allow for about a minute of skiing, and then lose power and slow to about 5-10 mph, then usually surge again to 20ish mph, and back down again. The boat never turns off, doesn't fully lose power, doesn't make sputtering noises, or bogging down noises. It simply slows down like I pulled back on the throttle.

    Once this occurs during a set, it normally occurs again. If I turn the boat off and let it sit it will occur after awhile again. If I try to immediately bring it to an idle after losing power and then speed up again it loses power pretty immediately.

    I did change the belts and those feel loose now. It is a v belt setup and im unsure of how to get them tight enough without a tensioner pulley. Not sure if this could be the issue or not.

    Was wondering if I should try putting some Sea Foam into the gas tank and see if that may clear things up in case it is a fuel issue. I have had a previous fuel issue though and that made noises like bogging down whereas there is no noise associated with this loss of power.