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  1. #1
    Member
    Join Date
    Dec 2007
    Location
    Waco
    Posts
    132

    water pressure issues on yamaha hpdi

    my water presure was low so i changed the water pump/impeller and cleaned all my lower unit inlets and my water pressure is still very low. at 4000 rpms its around 8 psi and at w.o.t its 10 psi. no alarms have gone off and then engine runs like a champ, any ideas whats wrong?

    before this i was getting the normal 15 psi.

  2. Moderator 21XDC's Avatar
    Join Date
    Sep 2004
    Location
    Westland Michigan
    Posts
    65,420
    #2

    Re: water pressure issues on yamaha hpdi (Skeeter TZX 20)

    Bad popit valve? Plugged? Gauge going bad?

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  3. Member
    Join Date
    Jun 2004
    Location
    Scottsdale
    Posts
    2,305
    #3

    Re: water pressure issues on yamaha hpdi (21XDC)

    My '04 had the old style poppit valve and did the same thing. Had new one put in and no problems since.

  4. Member
    Join Date
    Aug 2006
    Location
    Lino Lakes, MN
    Posts
    1,321
    #4

    Re: water pressure issues on yamaha hpdi (gleninaz)

    Poppet Valve I bet
    2013 Skeeter MX1825 with Yammy F150 & Garmin Ultra 106sv & LVS34 Livescope

    "My hotfoot pedal goes to 11"

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