Reply To: 67 33HP Evinrude running very hot

[bob-d]

Don, went through the pump yesterday. Impeller plate, housing, and impeller all replaced during rebuild. Impeller was OEM. All impeller cover bolt threads were perfect. I have a new impeller on order to err on the side of caution.
Looked under the water bypass plate on the lower unit as per Franks suggestion, and there was no crack. All passage ways open.
As far a pump flow, it was flowing during this problem. Was it at 100%, I don’t really know, but I did put my hand under the discharge while the motor was running, and it felt red hot.
Question….since this is a new rebuild with new pistons, rings etc, do motors for any reason run hotter during breaking in? Just a thought?
One thing for sure, when I assemble and run the motor next year, I will have my digital thermometer so I’m not guessing on temperature.
Thanks again,
Bob D