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  1. M

    454 IB loosing power

    RE: 454 Mercruiser 330 HP, 1990 Gents, My port engine falls off when getting on a plane. I have to move that throttle up about 30% more to keep up with the starboard engine. The secondaries are open and it uses fuel like crazy. In feels like the engine timing isn't advancing. I'm going to...
  2. M

    Port engine using much more gas than stbd...

    Gents, Re: 1990, 454's, 330HP Mercruisers full fresh water cooled: Went on a 132 mile round trip this past weekend. An early engine check reveled what sounded like a blown out exhaust manifold gasket on the port engine. At idle I could hear tick-tick-tick. When underway I noticed the engine...
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