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  1. B

    tell tale channel clogged 1966 Merc 500

    has new impeller -clogged before hose to outlet pee hole . Where clog? can I install a temp gauge and see if its cooling enough ?
  2. B

    Merc 500 water flow

    I did the same with my 1966 500 Merc that has a new impeller and was wondering if I install temp gauge can I run it hoping engine is getting enough cooling water to rest of motor by monitoring temp
  3. B

    Merc 500 water flow

    and its nice to be here among boaters
  4. B

    Merc 500 water flow

    can I run it with clogged tell tale channel before the pipe to the pee hole . if I attach a temp gauge to motor that has new impeller
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