overheating

Discussion in 'Outboard Maintenance' started by rstevens, Jun 21, 2010.

  1. rstevens

    rstevens I Love microskiff.com!

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    1977 Johnson 70 hp is overheating. I replaced the impeller on the water pump and now it overheats. I took of the thermostat off and I am getting no water up top when the dog ears are on. Any ideas? What did I screw up and or miss?
     
  2. Brett

    Brett > PRO STAFF <

    Try putting it together again.
    You've got something missing or installed incorrectly.
    Either a missing or split seal, oring, gasket or key.
    Or an impeller that has separated from it's center metal bushing.
    Make sure you have the complete parts/assembly diagram
    for your year and model outboard.