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SPARK PLUGS-gctid819944

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    SPARK PLUGS-gctid819944

    Hello All,

    new to the BOC...not new to boat ownership, however I have a new boat. It's a 2000, 2655 with the 7.4 MPI. Question, do I need to remove the risers and manifolds to change the spark plugs. It's running rough when I open the throttle.

    Suggestions welcomed.

    I can change my plugs without removing the manifold, but my boat is wider so I have plenty of access. I take it you can't stick your head in there and see the plugs?

    When was the last time your boat was ran? Could be old fuel, dirty fuel filter, etc.
    Huntington Beach, California
    2018 Element 16
    Currently looking for 32xx in South Florida
    Former Bayliners: 3218, 2859, 2252, 1952


      Hopefully you have some maintenance records that came with the boat. These will reveal how old the plugs, and other parts are. IF not you need to experiment a bit to determine why it's running ruff. As previously mentioned, fuel can get old and filters can get clogged. You can check on a clogged air filter by just removing it and running the boat. It takes a little more work to look at, clean out and replace a clogged fuel filter. Make sure the carb and choke are performing correctly.

      If the air and fuel are OK, you might be right to look at tune-up components. Up to and including the plug wires themselves: often neglected for years. IF the plugs are hard to get to, you might save them for last. But they should come out with a little creative tool use. Most of this work might not be needed if the boat has been in a backyard for years.

      A serious warm up might remind these parts how they are supposed to work

      Happy boating.