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    3.0 130 choking at high RPMs???

    Here's the problem... The boat (1990 Searay 160 I/O) starts and runs normal. It has power and will get up on plane. It will even run at 4500 RPMs without a hick-up for about 10min. However, after 10 min or so, it starts to choke out. If I back off the throttle a little bit, it'll stay...
  2. C

    Mercruiser 3.0 questions???

    Greetings, I recently put 93 octane in my 3.0 because I was stupid and actually thought it would help with performance and clean out my old motor of any carbon build up. Only rather than help, it made it run worse... way worse. Once the 93 cycled through the old 87 in the tank I really...
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