Recent content by sylvaing

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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    So far the Seafoam seems to help, I'll see if thing gets better or not. If not, I'll get them. Today, I was able to cruise a 2000 rpm for about 30 minutes and the engine was running smoothly. I was able to 'punch it' and it went WOT after a slight delay. Only issue I'm currently seeing is I...
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    Yes, that's what I've been told. That's why I only revved it a few time for a second or two each to diagnose the problem.
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    Indeed. That's why I'm doing some research and asking around. Right now it's starting to run better and don't want to make it worse. One ounce per quart is just 3% dilution but I don't run the boat enough to spend that amount in a decent amount of time and I'm worrying it will degrade the oil as...
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    No to what? To add Seafoam to the oil tank? Because I was just about to post that Seamfoam seems to think otherwise. https://seafoamworks.com/questions-and-answers/adding-sea-foam-to-a-2-cycle-oil-tank-mercury-outboard-solved/
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    Ok, one more video, this one showing where the water is coming out from when running at 1500 rpm. Raising the motor until the the bottom of the lower end is off the water, I can see it's a hole near the base of the foot. I'm guessing it's a overflow from the pump? As I rev up the motor in...
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    Not sure if you watch the same video but you can see I revved up for a few seconds, a few time. I have a hard time believing that will do any damages. I also posted them because I got three different answers and wanted to pin point the problem. Although yes, no load and with load are two...
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    Hi, I took video to show the behavior On this one, the first two throttle up was very, very slow and you can see (and hear) that once about 2500 rpm is reached, it revs up to 5000 rpm quickly and I have to slightly drop the throttle to prevent it from over revving. The next two throttle up were...
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    Boat two stroke engine stalls when throttle is applied unless I throttle up very slowly

    And at one point, power will kick in and the engine will work as usual. If I put more people in the boat, I have to rev up even more slowly before the power kick in. It kicks in at about 2K RPM and revs to about 3K almost instantaneously. It will run fine if I keep the throttle applied. Engine...
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    1992 75 HP Mariner, lower unit problem

    Hi, right in the middle of Summer, my lower unit decided to fail :facepalm: and hopefully, it won't require a new unit ($1700 for a refurbished one). I'll explain the symptom and venture a possible cause. Here it goes (sorry for the length) Two days ago, while pulling a tube, the engine...
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    Lost the audible low oil warning

    Hi, I have a 1992 75HP Mercury Mariner engine that I replaced the electronic components late last year (stator, voltage regulator, switchbox and trigger). Engine has never ran as smooth as that since I got it 4 years ago. Thanks all for your help regarding this problem. However, I noticed...
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    Compatibilty between Garmin 100 and 140

    Hi all, my Garmin 100 Fishfinder gave its last breath today (screen is completely dark now). Can I simply plug a Garmin 140 into the Garmin 100 connector and use my current transducer or must I tear down my current transducer/cable and install the one that comes with the 140? Thanks.
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    1992 75HP Mariner problem

    Hi, I have a 75HP, 1992, 3 pistons/2 strokes Mariner engine that started to give me trouble last week. While a was pulling a tube, the engine suddenly lost power and even at WOT, would not go over 2,600 RPM (while pulling the tube). I tried the boat alone and even at WOT, the RPM would slowly...
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