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  1. #5
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    Re: 50 hp Mercury Four Stroke (1999)

    Quote Originally Posted by Waterdog View Post
    Something may have temporarily blocked the water intake or you may have had something get stuck inside the unit blocking the flow. Take it out and run it hard and see if it happens again.
    I'm going back out tomorrow and see what happens. Thanks for all the ideas everyone. If it goes off again I'll get it in for service. It sure gets your attention when it sounds off.

  2. #4
    Senior Member Waterdog's Avatar
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    Re: 50 hp Mercury Four Stroke (1999)

    Quote Originally Posted by Folsomtroller22 View Post
    Went to Folsom Lake to troll around and while doing so the alarm on my outboard went off. It's never happened before so I shut it down and returned to the dock with the electric trolling motor. Got it home and put it in my big bucket of water to check if the water pump/impeller was operating o.k. then I checked the engine oil and made sure it was all good. I started it up and everything runs perfectly fine for a good 15 minutes. The alarm did not come on while operating at higher rpm's. I'm stumped as to why it was activated (very noisy sound). Anyone have any thoughts? I'd appreciate any suggestions.
    Something may have temporarily blocked the water intake or you may have had something get stuck inside the unit blocking the flow. Take it out and run it hard and see if it happens again.
    Hunting, Fishing and Labrador Retrievers and at the end of the day a glass of Buffalo Trace Whiskey- Life is Sweet.

  3. #3
    Member TrackerDV17's Avatar
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    Re: 50 hp Mercury Four Stroke (1999)

    Could have been overheating under the load as the motor warmed up.

    Check the thermostat?

    Even running the engine in the bucket the water pee stream should warm up after a little while at higher RPM's.

    If it stays cold it's probably the thermostat.

    Mike
    Last edited by TrackerDV17; 10-03-2019 at 11:57 AM.

  4. #2
    Super Moderator salmonid's Avatar
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    Re: 50 hp Mercury Four Stroke (1999)

    Did you notice if it was spraying water from the tell tale on the lake when the alarm went off? Could have been sand that plugged it up temporarily.
    Here they come!

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  5. #1
    Senior Member
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    50 hp Mercury Four Stroke (1999)

    Went to Folsom Lake to troll around and while doing so the alarm on my outboard went off. It's never happened before so I shut it down and returned to the dock with the electric trolling motor. Got it home and put it in my big bucket of water to check if the water pump/impeller was operating o.k. then I checked the engine oil and made sure it was all good. I started it up and everything runs perfectly fine for a good 15 minutes. The alarm did not come on while operating at higher rpm's. I'm stumped as to why it was activated (very noisy sound). Anyone have any thoughts? I'd appreciate any suggestions.

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