Reply To: 67 33HP Evinrude running very hot

[bob-d]

Don, here is a picture of the exhaust housing cavity you asked for. I removed the square plate and exposed a large bleed hole that I guess is what the engineers planned to cool the exhaust housing using the water that dumps from the rectangular opening on the top of the picture. I did a lot of digging and that was the only bleed hole I could find on the exhaust housing.
I will remove the plate that Frank mentioned tomorrow and look for a crack . Other than that I’m out of ideas. I will heed your advice and purchase all new OEM gaskets when I put it all back together. That will go for a new impeller as well.
Only problem is that my vacation is over this weekend. Unfortunately I won’t have time to rebuild and test the motor until next July, as the boat and motor are stored at my vacation home. I’ll take the head, and gear case home with me and continue probing. I won’t be able to reassemble and water test until next July. It’s going to be a long year thinking about the problem.
Thanks again,
Bob D