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  1. C

    Mariner 40 hp.

    I have the same engine on a 14ft lund with a 15 pitch Michigan wheel and hit somewhere in the mid to high 5000's depending on load. The engine has a progressive redline where it starts to retard ignition timing around 6000 and goes to complete spark cut after that, so while it's not amazing to...
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    Johnson 35 with intermittent stream before thermostat opens

    This bottom bolt here (which looks like so much fun to deal with) has snapped itself off, which is why i wonder if there's somehow exhaust sneaking into the cooling water, then since there's more flow out the top of the head once the thermostat opens (or the poppet allows it to open), it...
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    Johnson 35 with intermittent stream before thermostat opens

    Does it out on the water. If i stop and fish for a while it'll squirt and spurt for a minute, the thermostat opens, and it returns to a normal stream. It does the exact same thing on the ground with muffs, too. but I know those have their own issues so I always confirm these things on the water.
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    Johnson 35 with intermittent stream before thermostat opens

    I have a 1981 johnson 35 with a weird problem. Here is some history: The thermostat broke in half causing the engine to overheat a bit (i heard it pinging and shut it down before it seized or anything bad). I changed the thermostat, cleaned the bore so it can spring open and bypass at high RPM...
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    At my wits' end with a 30hp mariner

    Well, i may have solved my problem. I took the reed plate off and some of them weren't closing so I flipped the reeds over to make them seal. Now it starts right up, runs beautifully, and accelerates just fine. I am absolutely aware that doing this WILL break the reeds and destroy my engine, I...
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    At my wits' end with a 30hp mariner

    I bought a 14ft lund with a 1996 30hp mariner 30 that has oil injection and I cannot get it to run well. It was accelerating very slowly. It would eventually reach a plane, but it took a long time to get there, this engine should have snappy throttle response, but when I put the throttle down it...
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