Reply To: 67 33HP Evinrude running very hot

[Don]

OK, so all the water exits the powerhead through that cavity in the back.  Somewhere there must be a larger hole in the powerhead cavity where the water leaves the head, hard to tell from your picture.  That little bleed hole underneath the powerhead is surely not large enough.

So you found a little bleed hole where a little water leaves that rear ex hsg cavity and sprays inside the housing to cool it, am assuming it was clear.  Some engines have a little bleed hole on the intake water tube as well, but who knows if this is one of them.  Just wish I had a similar exhaust hsg to disect to get all the answers to our questions.  Hopefully one will turn up before you reassemble.

So sorry about your vacation, but I would just hate to have you put the whole thing back together with the old gaskets only to have leaks develop.  I was under the impression that there was plenty of water flow when you saw the steam coming out, but maybe I misread the post.  So, it is best to pull that pump apart to see if the impeller is OEM.  Did you replace the impeller hsg and SS plate during the rebuild?  None of the impeller cover threads were messed up in the gearcase?  Mating surfaces good underneath the SS plate?

As always, anything is possible here, so sorry you pulled that powerhead apart Bob.   D