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  1. #1
    Join Date
    Feb 2009

    Default 4.3L water pump leaking

    My 2000 4.3L is leaking water from the little hole on the top of the water circulating pump on the engine. It is not overheating and is a small amount of water but I believe this is a sign it needs replaced. Is this correct?

    Thanks, Jim

  2. #2
    Petty Officer 1st Class
    Join Date
    Apr 2009

    Default Re: 4.3L water pump leaking

    Yes it is there to show you that the seals are bad and needs replaced.

  3. #3
    Lieutenant Junior Grade danond's Avatar
    Join Date
    Jun 2007
    Bismarck, ND

    Default Re: 4.3L water pump leaking

    Yep, that's the weep hole. Indicator that it's going bad. Mine did that during first startup this year, but quit once the bushing got warm/lubed by the water. I think I have a season or two left and it'll be ready for replacement, too.
    1989 Starcraft 171S Select "Cap'n Crunch" / OMC Cobra 4.3 V6 / 432APRMED

    If you're going to keep that OMC Cobra, please for the love of everything good in the world, get an OMC factory service manual. Not a Clymers, Not a SELOC. You can find them on eBay.

    My boat repair website:

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