Recent content by bobbuffalo43

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    Mercury overheating problems

    Removed lower unit and water pump. Replaced all water pump gaskets. Removed water tube and found it to be distorted at upper end. Replaced water tube and reassembled lower unit to top. Started motor in tank and idle water pressure was 2-3 psi. After engine warmed up, water pressure was 25-30 psi...
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    Mercury overheating problems

    Latest symptoms. I put house water under pressure into the water pump grommet fitting under the powerhead, in effect replacing the water pump. (The lower unit was removed). The water pressure gauge, with the engine not running, read about 3 pounds and water was coming out of the exhaust passage...
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    Mercury overheating problems

    Well, today I dropped the lower unit again. I made an adapter with ½” copper pipe and connected it to my house water supply. I inserted it into the output of the water pump to test for leaks. Water pump was solid and no problem. Then I inserted the water supply pipe into the water tube rubber...
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    Mercury overheating problems

    Higher RPM does nothing for water flow...
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    Mercury overheating problems

    Fresh water only. The coolant passages around the starboard cylinders are pristine.
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    Mercury overheating problems

    Replaced the whole thing, but as I said, the old one looked like new. I'm more than reasonably sure that the pump is not the issue.
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    Mercury overheating problems

    Help! I bought a used Ranger bass boat as a winter project. The engine, a 1996 Mercury 150 EFI (0G3xxxxx) was in pretty rough shape as it had overheated badly and melted a lot of parts. I started out with the engine running roughly and no telltale water from the p-hole, and the engine would...
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    Suzuki DT150SS

    My 1989 Suzuki DT150SS pulls about 5200rpm at 60mph on my 1990 Ranger 482v. Is this within the suggested WOT rpm range?
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    1987 Mariner 60 hard starting

    Squeeze the fuel bulb and you can hear the carbs filling up. Choke button works, cranks forever (almost, about 30-40 seconds) before starting. Once running it runs perfectly. Tried idle, part throttle and full throttle, no difference. Without choking it would never start. It's not flooding but...
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    87 Mariner 60 low water pressure

    At full rpm, water pressure is only 1-2 pounds on gauge. Water at P-hole seems forceful, and gauge and hose have been tested (reads 3-4 lbs. when I blow in the outboard hose end). The gauge fitting on the head is clear. The engine runs fine and does not seem to overheat. Water pump has been...
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    Power Loss

    Just purchased a 92 Ranger 482V bass boat with a 1992 Evinrude 150 V-6. Since it had not been run for 2 years, I drained the fuel tanks, carbs, gas lines and refilled with fresh fuel. On its maiden voyage it ran great (for a while) with speeds near 60. Then, after a 45-second high-speed run, it...
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