1967 65HP Merc testing for water flow

heyblue

Seaman Apprentice
Joined
Sep 4, 2012
Messages
48
Bought boat and motor cheap and no history.
Got the engine to start, burnt switch box. I dropped lower unit and installed new water pump parts, the old ones looked ok. When running engine on water muffs I get water flow out the center of prop, and after a few minutes it is slightly warmer than ingoing water temp. I thought engines of this vintage had a small hole that sprayed out a small stream to indicate water getting up into engine. I have not spray and can not identify any hole that would do so. Does this engine have such a thing? If so do you have a pic of where it might be?
Thanks in advance
Everett
 
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