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    cracked block headgasket or something minor?

    454 MPI Mercruiser MAGNUM motor drove my boat at WOT yesterday for a few minutes. I just bought the boat and do not know its history. Suddenly started hearing a ticking and knocking noise in the engine and experienced power loss. I see alot of white vapor coming out of the exhaust, i notice the...
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    1996 Euroline 120xr Jetboat how to change the tilt of the jet drive?

    I have a 95 jet boat and a 96, my 96 lookslike the jet is pointed more up than down into the water, it also creates a bigger rooster tail when i throttle it, however my weaker 90hp jetboat goes the same speed as my 120xr hp jetboat. I'm wondering if the tilt of the jetdrive pointed up rather...
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    how do i know if i damaged my ride plate?

    I finally got my boat running for the first time yesterday and it ran around 30-35mph. Its a 95 90hp baja jetboat. We tested it quite extensively out of water and it sneezed once and i've read that it can damage the ridge plate which will cause power loss. What can i do to examine the plate...
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    starter problem HELP!

    when i try to start the boat the pinion spins up to start the boat, then falls down after a moment of turing the flywheel, then I just hear a buzzing noise (from the starter) after the pinion sits back down. The pinion is supposed to keep staying in the up position turing the flywheel until the...
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    how to test auto enricher?

    can you hook up both leads to the battery to test it? We tried that and nothing happened. Also we tested the ohms and it read 27.7ohms How does one test a auto enricher? should it click when it has volts to it? This is on a 95 jetboat 90hp mercury
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    Jetboat wont stay running wont restart after warm

    I have a 90hp 1995 jetboat mercury motor. Boat starts up fine but after about 5 minutes will sputter out and will not restart. I have new plugs, stator, wires, fuel, and checked the carbs which appear to be working but may need adjustments. I sprayed some ether into the carb today after the...
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    is my stator bad? or do i have another problem?

    i have a 1995 Baja Jetboat 90hp mercury motor. the boat will startup fine, and then after about 3-5minutes will die in idle and we cannot restart it. The motor turns, fuel pumps, and we see spark on the plugs, but the engine will not fire. Also all the plugs are tyically wet at this time as...
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