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  1. #61
    My Boats:
    1998 Scarab 22'
    Join Date
    Aug 2007
    Boynton Beach, FL
    Continuing my saga over in Tech.....

    just got the bright idea to stick a screwdriver into the drain hole -- I hit sand. Duh.

    Poked around a bit, got a nice gusher of water from both sides of the block, and a good amount of sand. Guess that's why I was running hot.

    SO, what's the recommendation for getting that out of there?

  2. #62
    Registered rchevelle71's Avatar
    My Boats:
    1982 Pantera 24sport
    Join Date
    Aug 2003
    Boca Raton
    Quote Originally Posted by DrFeelgood View Post
    Ok, so I started tearing apart the cooling system tonight.

    The impeller looks perfect -- no torn vanes, no sand in it at all.

    The thermostat housing looks fine from the underside of it -- how do I get the thermostat out of there to inspect the top of it?

    No sand in the intake manifold, or any of the hoses going to or from the sea pump. The top screen of the oil cooler is clear other than a piece of grass or 2.

    If I flush with the hose into the exhaust manifold feed hoses, or the water pump upper hose, or the oil cooler, I get flow through the system.

    I opened up the stopcocks on either side of the block (which is rusty, btw), and the water doesn't pour out like I would expect -- it just drips... drip.. drip... That's the only thing I've found so far that seems strange to me, but maybe it's normal??

    SO, next step is what? Take out the freeze plugs in the block? Pull the intake?


    you should get water out of those nipples at the bottom of the manifolds, sounds like that is where the sand settled, I would just keep flushing til it comes out better, I wouldnt do anything drastic just yet, like removing manifolds, flush it a LOT, and try to get a coathanger or something up inside that fitting to losen the crap up, I have had to do that back when I had car motors(which I am starting to think about getting back into).


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