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    1987 mercury V6 150hp black max

    I’ve taken a temperature gun while on the water to see if any of the cylinders were cooler then the others… But were all relatively the same.. Maybe i should go n replace all 6ignition coils..
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    1987 mercury V6 150hp black max

    And the primer bulb stays firm to squeeze while the motor is running.
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    1987 mercury V6 150hp black max

    Its a 17.8 procraft. Ski surf boat, real low rider. Straight windshield across both driver and passanger seat Not sure on the model of the boat itself. It looks like an older stratos.
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    1987 mercury V6 150hp black max

    Its a fiberglass boat, no leaks that ive found. Stays dry in the below floor storeage. Previous owner removed the floor and rebuilt it. Possible the prop could be wrong. But im more inclinded to thinking its mechanics related
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    1987 mercury V6 150hp black max

    I’ve rebuilt the carbs. Rebuilt the mechanical fuel pump. Replaced the cooling system parts (impellar, both thermostats, and popit valve) New fuel lines and water cooling lines. Hose clamps on all connections. Checked the fuel tank that it gets proper ventilation. No fuel pump inside tank...
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    1987 mercury V6 150hp black max

    The prop is the original that was paired with the motor for that boat from the manufacture. I know the history of the boat. It has less then 100 hrs since new back in 87. It runs good on the garden hose or with the bottom end in a garbage can. Tach reads up to 7000rpm when theres no load on...
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    1987 mercury V6 150hp black max

    Compression is 110 on all cylinders. Ive replaced all brand new plugs. Tried swapping a new ignition coil in place of each orignal coil. Made no difference with the outboard. I’m hesitant to take the power head off and do the crank seals like a previous mechanic said it was the problem...
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    1987 mercury V6 150hp black max

    So I bought this boat a few years back, full knowing it had a hurt motor. But I'm stubborn and it was a good deal. The boat is a 18ft pro craft and it has a 150 V6 merc 2stroke The motors problem is. When you get the boat in the water (and run the outboard under load) it doesn't have the...
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