Speedometer keep getting plugged on outdrive.

Discussion in 'General Maintenance/Repair Questions' started by KrazyKarl, Aug 5, 2022.

  1. KrazyKarl

    KrazyKarl Member

    43
    Jun 26, 2022
    1999 190CC Sea Ray
    4.3L Alpha (190 PHP) MCM stern drive
    I'm a new owner of a 1999 SeaRay 190 CC with a MerCruser Alpha 1 out drive & the small hole in the front of the out drive keeps getting junk in it. I have cleaned it out many times but it still gets plugged. Is there a different way to get the speedo to work that doesn't get plugged all the time.
     
  2. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx 502 mag
    2005 Baja 242 islander 496
    502 mpi Bravo 1
    496 mag B1
    gps on dash
     
    Coz and mrsrobinson like this.
  3. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake Bay, Middle River
    Sundancer 250 ‘91
    7.4 Bravo 1
    ^^^ what he said, for real accurate i use an app on my phone, previous owner bypassed the outdrive pickup with a transom mounted pitot tube which really is not much better. you can spend a lot of money for a dash mounted gps unit, or get a phone app. I use Speedtracker on iphone, it works well and log trips.
     
  4. mrsrobinson

    mrsrobinson Well-Known Member SILVER Sponsor

    Mar 9, 2006
    Virginia, USA
    2001 Sea Ray 380DA
    3126 purring CATs
    Agree to previous posts, I've never trusted the speedometer on the boat, and honestly they've never worked on mine.
     
    b_arrington and Tripsdad like this.
  5. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake Bay, Middle River
    Sundancer 250 ‘91
    7.4 Bravo 1
    I paid $250 last summer for a short haul to replace a busted pitot tube that wouldn't stay down, prolly hit a fish. Even if not accurate, there is something about that dam gauge reading 0 that annoys me. Had to fix.
     
  6. Coconuts

    Coconuts New Member

    10
    Aug 8, 2022
    Arizona
    2006 Sea Ray 200 Select
    Mercruiser 5.0 W Alpha 1 Gen 2 drive
    I keep having the same problem on my 200 Select - keep getting little pieces of wood in there as we have a lot of garbage in our lakes...I pick it out and speedo works for a while, then something gets in that tiny hole again... Not really sure it's accurate anyway as others have said, but I cannot stand the gauge at zero all the time...almost as bad as a check engine light!!
     
    Nater Potater likes this.
  7. KrazyKarl

    KrazyKarl Member

    43
    Jun 26, 2022
    1999 190CC Sea Ray
    4.3L Alpha (190 PHP) MCM stern drive
    I got mine opened up a little, it takes a few minutes of running before the speedo starts to come up. As I come off plane it takes a few minutes to show I've stopped.
     
    Nater Potater likes this.
  8. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    It's still clogged.

    It's just the nature of the beast in certain waters with stuff floating around.

    Ream out what you can till you bottom out the drill bit. Then try blowing it out - disconnect it at the quick connect fitting by the cavity on the front of the engine by the anti-ventilation plate.
     
    Last edited: Aug 26, 2022
  9. Nater Potater

    Nater Potater Well-Known Member GOLD Sponsor

    Oct 19, 2020
    Southwest Idaho
    1992 300DA Sundancer
    Twin Merc Alpha I Gen II I/O's with 5.7 V8's
  10. Bill Curtis

    Bill Curtis Well-Known Member

    533
    Mar 24, 2022
    Ahoskie, NC
    '95 220 Overnighter
    454 Mag Bravo3
    I actually bought a spare yellow fitting that connects the pitot passage on the drive to the hose that goes into the boat. I connected that spare fitting to a hose adapter and then connect to my garden hose and force water down into the pitot passage, back flushing the passage on a regular basis, to clear anything out of there.

    Mud and gunk will build up in there over time, since there is "no actual flow" flushing it out.
     
    techmitch likes this.
  11. techmitch

    techmitch Well-Known Member PLATINUM Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
  12. techmitch

    techmitch Well-Known Member PLATINUM Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
  13. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake Bay, Middle River
    Sundancer 250 ‘91
    7.4 Bravo 1
    PO changed to a pitot tube which works well except when I hit a fish and it broke.
    Also iPhone app SpeedTracker works great.
     

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