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    Another prop slipping thread

    Before pulling OD and examining coupler, I'd lock the motor (best way) and then install a couple of jam nuts on prop shaft. Then with breaker bar see if you can turn over motor by hand via breaker bar. If everything is ok, install prop with motor turned off and use a 2x4 to see if you can move...
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    briefly overheating

    NOT real familiar with 4.5 MPI, I have only worked on Chevy V8s/carbureted. However, with a friend at helm and motor ON, wiggle temperature sensor wires and see if there is any temperature gauge change. Time to pull risers and test them, if salt water used. With a friend at helm switch, you...
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    Bad engine coupler or spun prop hub?

    I suspect only prop hub is damaged and slipping. Take it to a shop for examination. If you can lockup motor so motor will not spin, you can remove prop and install a couple of jam nuts on prop shaft and use a huge breaker bar to see if shaft moves. If it does, chances are that your coupler is...
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    Bad Transom?

    Get contract with owner that you be allowed to go inside and drill small holes into transom to check for ROT. If not, bargain down the price justifying the added costs of replacing transom wood.
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    Valve Cover Vent putting out excessive smoke.

    pull dip stick and check for water in oil.
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    New Motor same power issue

    The popping sounds like timing issues, but issues at slower speeds sounds like what Scott says. Also, check screen in gas tank pickup tube, which may be blocked and starving motor for fuel. I had quad's on a 95 that also had electric fuel pumps because the boss on the blocks didn't exist. Stay...
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    When my boat is on the trailer, this happens.

    In addition, I am not so sure that all Mercury/Prestolite ram or hydraulic relief valves perform as they were intended. I hit a log years ago and tore a Mercury OB off the transom of my boat. Not a fun day... Fear of sinking my boat due to valves failing, I always keep boat speeds lower than...
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    Replacing U-joints Alpha one gen 1

    You might be able to get an auto ball joint removal tool to work.
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    Trim Switch Malfunction

    That old of a boat, you should seriously think about overhauling both rams. If salt used, definitely.
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    Mercruiser Shifting Issues

    always test shifter with od in the water. The system needs the resistance.
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    Dribble of oil at prop, usual suspects checked, now puzzled

    You can buy a pressure testing kit. I suggest purchasing one and using it, or you will always have doubts. Every shaft seal I have seen was dry rotted, but they didn't leak. I guess I was lucky!
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    Alfa 1 gen 2 sterndrive install issues

    Make sure grease indexing marks are even.
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    Missing transom bolt on Mercruser outdrive to bellhousing.

    Mine were 7/16 or 1/2". I can't remember. No threads or mine were not there. You probably could use a 1/2" regardless. I used carriage bolts and lock nuts. Hard to find C bolts in ss, but I don't see why a hex-head and fender washer and lots of 5200 wouldn't work. Make sure no rot in bolt hole...
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    Alfa 1 gen 2 sterndrive install issues

    gimbal bearing not centered (hopefully or else other major issues). This happens a lot when replacing bearing or allowing OD shaft's weight on removal to dislocate bearing. Beat alignment shaft side to side several times and see if shaft trues up. No gear teeth on grease means it is not going in...
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    Missing transom bolt on Mercruser outdrive to bellhousing.

    go back with ss and lots of 5200.
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    I need help

    I suspect that you have a ground or connector issue. Start wiggling wires while motor is running.
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    Missing transom bolt on Mercruser outdrive to bellhousing.

    They got their money and figured that you would be a repeat ($$$$$). That particular MC design has sunk a lot of boats.
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    Missing transom bolt on Mercruser outdrive to bellhousing.

    Crappy early MC design to minimize electrolysis (I guess). My 86 Sea Ray had aluminum bottom bolts. When I replaced engines, I went back with SS. Lots of 5200 too.... Luckily, my transom was OK.
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    Replaced Bellows now gears won't engage fully?

    Examine the shift keyway again. Putting od back on can get mis-aligned.
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    Best boat lettering removal?

    I suspect that I will have to buff hull where lettering was. This is an 86 boat. Thanks
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