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    Johnson 35 with intermittent stream before thermostat opens

    well so... I can't leave things well enough alone, if it isn't perfect i'm not done. Pulled the cylinder head off (only two bolts on this stupid turd broke, and one bolt hole stripped out...), i think it's a blown headgasket. The gasket looks suspect, it's a bit burned, the lower portion of the...
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    Johnson 35 with intermittent stream before thermostat opens

    I pulled the exhaust cover off and miraculously 6 of the bolts didn't break off! The pistons and cylinder walls and piston skirts/rings look amazing. Sadly there's no "smoking gun," except for one bolt that was blackened with exhaust, it doesn't seem to have any blown gaskets or holes in the...
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    Military Outboard OMC 35hp

    My 35 runs beautifully except after i shut it off for 10-15 minutes. It takes several pulls to start with the throttle as far open as allowed in neutral, it stumbles, misses, farts, then after 10 seconds snaps out of it and runs perfectly. Sounds like the same thing and I have no idea what...
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    Show Your Lund!!!!!!!!!!!!!

    I bought this lund with an ugly paintjob really cheap. Has a 30hp mariner that didn't run properly, so I solved that and uprated it to 40hp while I was in there. It has hundreds of pounds of waterlogged, rotten foam under the rear seats and a rotten transom. Working on fixing those now, by the...
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    Johnson 35 with intermittent stream before thermostat opens

    This thing runs like a bat out of hell, pushes my 14ft starcraft to 30kts, so I don't think it's blown up. But I don't want it to
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    Johnson 35 with intermittent stream before thermostat opens

    I have and those work in some cases. If you're working on aluminum and can get the heater coil around the boss where the threads are you can often free it up, but just heating the bolt head usually doesn't do anything (besides round the head off because you got it too hot...). The reason you...
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    Johnson 35 with intermittent stream before thermostat opens

    Crank the mig welder up hot enough to melt the bolt off flush with the surface. Turn the welder down a bit and weld blobs onto the stump. Immediately hit it with wd40 (or whatever) and twist it out with vise grips. Works almost every time without damaging the threads. Pro tip if you have a...
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    Johnson 35 with intermittent stream before thermostat opens

    I use it mostly in fresh water, but i have no idea how it was used for the last 40 years of its life.
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    Johnson 35 with intermittent stream before thermostat opens

    heh yea... that's kinda how I feel about it. Doesn't overheat and works fine once the thermostat is open, there isn't much season left so maybe i'll take it apart this winter. I only spent about 5 minutes on each broken bolt doing the the thermostat, so hopefully it isn't worse than that one...
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    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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