SPARK PLUGS-gctid819944

[01229J1]

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.

[green650]

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.

[mister_larry]

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.