Running hose in outdrive question

Discussion in 'Sport Cruisers' started by FuzzDaddy, Oct 13, 2021 at 5:45 PM.

  1. FuzzDaddy

    FuzzDaddy Member

    127
    Jul 8, 2020
    2002 Sea Ray 230 Signature
    5.7 Mercruiser
    Hi everyone,

    Im getting ready to winterize my 5.0 MPI 240 Sundeck. I found all 5 blue drain plugs. I used a coat hanger to unclog them. Since I had all 5 plugs out I hooked up the muffs on the outdrive and started the engine for a few minutes. I was hoping water would drain out the plug ports to flush everything out while the engine was running. The water was not running through the engine. No water was coming out the exhaust above the bilge plug. Funny thing is, water really wasn't coming out of any of the drain plugs ports either. Is this because I had all the drain plugs out?
    Thank you for your time
    Corey
     
  2. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake, Middle River
    1991 250 Sundancer
    7.4 Bravo 1
    Lazy Days can answer best but my guess. You said a few mins. Maybe not long enough to open thermostat for circulation.
     
  3. Thornton69

    Thornton69 Active Member

    771
    Sep 15, 2014
    Northern BC
    1981 245 SDC
    2021 Solar 420
    '97 5.7 Bravo 2
    '20 Merc 25 EFI Jet
    Do you have a Bravo with the engine mounted raw water pump? Sounds like weak muffs. They have to be able to hold enough pressure to get the water up to the pump.
     
  4. Espos4

    Espos4 Well-Known Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    You need to put the plugs back into the pump!
     
    OllieC likes this.
  5. FuzzDaddy

    FuzzDaddy Member

    127
    Jul 8, 2020
    2002 Sea Ray 230 Signature
    5.7 Mercruiser
    Yes it's a bravo unit. I'll put all the plugs back in and see if that works. I don't want to run the engine long without water circulating through the block.
    I have a strange question... on the lower front port side there is the water distribution housing. On top of it there is a cap. What is the cap for? It looks solid inside
     
  6. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    The ball is hollow inside , plastic and cracks easily. It has a blue drain plug in it to drain the hoses.
    With the proper muffs water will exit the exaust within 2 minutes of a fully drained block with the plugs installed. Water exits the motor no matter what position the thermostat is in. It needed to cool the rubber components
     
  7. Espos4

    Espos4 Well-Known Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    That cap is a dummy. Some housings are made with a rod that opens and closes the drain on the bottom of the ball. The rod travels through that portion of the housing.
    Also, don’t worry about running the engine with the block drained, as long as you do have the hose supplying water to the out drive. The block will begin filling once you start the motor. It won’t overheat in the short amount of time that it takes.

    Id be more concerned with damaging the impeller if you were running the motor without the blue plugs installed in the pump.
     
  8. FuzzDaddy

    FuzzDaddy Member

    127
    Jul 8, 2020
    2002 Sea Ray 230 Signature
    5.7 Mercruiser
    Excellent. Thank you for all the information and your time!
    Have a good night
     

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