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  1. #1
    Member
    Join Date
    Mar 2006
    Location
    Wilmington, MA
    Posts
    646

    What's the ideal water pressure running ?

    I see between 12,15 psi am I weak ? 0 at idle but have pee stream not strong
    ​BULLET 21XRS 250 SHO
    Hydro Tech flash / 27 Razor

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  3. Member
    Join Date
    Oct 2016
    Location
    California
    Posts
    299
    #2
    Are you using a digital sending unit or an analog gauge? What year is your outboard and when was the water pump last replaced?
    David Patten
    Automotive and marine technician.

  4. Member
    Join Date
    Mar 2006
    Location
    Wilmington, MA
    Posts
    646
    #3
    Quote Originally Posted by clayshooter100 View Post
    Are you using a digital sending unit or an analog gauge? What year is your outboard and when was the water pump last replaced?
    Mechanical Yamaha gauge 2018 original wp
    ​BULLET 21XRS 250 SHO
    Hydro Tech flash / 27 Razor

  5. Member
    Join Date
    Oct 2005
    Location
    Tullahoma, TN
    Posts
    408
    #4
    SHO is a low pressure high volume pump. 12-15 at WOT is normal. 0 at idle on analog is normal.

  6. Member
    Join Date
    Mar 2006
    Location
    Wilmington, MA
    Posts
    646
    #5
    Thank you!
    ​BULLET 21XRS 250 SHO
    Hydro Tech flash / 27 Razor