1977 55 hp evinrude please help

adennis896

Cadet
Joined
Apr 16, 2015
Messages
12
Hey guys looking for any kind of advice on this motor I have had it around two years I just recently replaced my impeller before boating season started. Last weekend I took my boat pulled it off the trailer left running while I was at the dock getting my stuff ready everything was running and idling good when I went to take off I made it about 100 yards downstream and was noticing a great loss of power I 21st over heating I shut it down let it cool off for about 45 minutes it took a minute to start back up but I got back on the trailer and home I checked compression and both cylinders were running around 62 psi which I know is low I also pulled my lower unit to see if maybe there was something not letting water through when I drained my gear oil it was very milky anyone have any idea on what I might need to change or replace now I know a head gasket purchase is in my future but should I get lower unit or shift seals any help would be greatly appreciated
 

jakedaawg

Rear Admiral
Joined
Jun 26, 2012
Messages
4,275
Incredible it ran with only 62 psi. Might want to try a different gauge. Before you spend time with the leaky lower unit.
 

adennis896

Cadet
Joined
Apr 16, 2015
Messages
12
Hence why she won't start I'll get another gauge tonight and see what's wrong with it I ordered the head gasket for safe measure
 
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