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    Ignition Coil Failure 1997 Merc 5.7 Thunderbolt V

    Hi. Went to take my boat out for the first time this season and my port engine refuses to start... not even close as if it's not getting gas or not getting spark. I look into the carb and it's getting gas so I assume it's not getting spark. I remove the main coil wire and use a screwdriver...
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    Timing Issues on Merc 5.7 Thunderbolt 5

    Hello all. I have two 1997 Merc 5.7L 2 Barrel motors with Thunderbolt 5 ignition. Timing wise I have one dialed in nicely at around 8 degrees and advancing correctly to about 32-34 degrees at 3500 rpm's. The other one has been troublesome. When in Base Timing mode, I set it to 8 degrees at...
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    Rochester 2G (on Merc 5.7) issues

    Hi all. Rebuilt both carbs (Rochester 2G's) on my engines (1997 Merc 5.7's). One is working beautifully. The other has fuel dribbling down onto the throttle plate at idle from the venturi. I believe this is causing an erratic idle. If I open the throttle the fuel atomizes correctly the...
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    Merc Trim Wierdness

    When I use the throttle mounted trim switch for my starboard engine, the port engine will often (not always) creep up as well. However, the port trim will not affect the starboard engine. The control unit is a Commander 3000 Dual and the boat does have a trailer switch. The trailer switch...
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    Alpha 1 Gen II lower half - Repair or Replace?

    Hello all. A couple of questions: This season I damaged 1 of my 2 lower unit on a submerged rock at low tide (a lesson has been learned about paying attention to charts and chart plotters while underway). The skeg itself needs to have a new one welded on and the shaft for the prop is bent as...
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    Opinions on Garmin 640

    Hello all. My Magellan 6500 is getting to be unreliable as it constantly drops connections at any speed. Looking at the Garmin 640 unit and I like it for a number of reasons specifically for its touch screen display, it's built in charts and its dual use for both auto and boat. Anyone have...
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    Fiberglass book recommendation

    Hi all. Can anyone recommend some good books (or video series) explaining in a step by step fashion "How To..." replace stringers and motor mount tabs? Thanks, --Rick
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    Pinging Ckalupa

    So I have started my winter project of removing all horizontal carpet with Lonseal Teak and Holly laminate. Problem I am having is removing the lounge seat base. I have disconnected all screws at the base and two in the aft storage closet as well. The aft part of the lounge is free and will...
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    Late 90's Cabrio 310

    Hello all. My 1997 Larson Cabrio 310 has a wet bar with a hatch lid. There is a small piston that is used to keep the lid open. The piston on mine went bad and I end up losing it about a year ago. To others that one a 300 or a 310, can you tell me the length of this piston when extended and...
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