1994 200HP Mercury trouble shooting

Discussion in 'Outboards' started by DonMac12, May 7, 2016.

  1. DonMac12
    Joined: May 2016
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    Location: Florida

    DonMac12 New Member

    At high RPM in the water. My Merc looses Prime bogs down and the motor dies. The ball dose NOT suck flat so all i have to to is re pump the ball and im off the the races!

    Ive traced the fuel lines for dry rot and leaks but they seem fine replaced the filter and the ball what should i check next?
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    Maybe sucking air through a faulty connection, or the fuel pump could need attention.
     
  3. DonMac12
    Joined: May 2016
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    Location: Florida

    DonMac12 New Member

    Thats what i was thinking is there anyway for me to test my fulepump befor condeming it?
     

  4. Mr Efficiency
    Joined: Oct 2010
    Posts: 8,003
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    Location: Australia

    Mr Efficiency Senior Member

    Is it a diaphragm-type pump ? (refer to workshop manual) The rubber diaphragm can develop pin-holes. You might check that, and replace if needed, you can probably get a kit. But I would be also concentrating on the snap-on fuel line connection to the engine, on old motors the seals can go, causing air to be sucked in.
     
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