1969 Evinrude 20hp compression check!

beavis331

Cadet
Joined
Sep 29, 2006
Messages
6
My brother is working on his motor and would like to know how much compression this motor is supposed to have. Top cylinder is 100psi, botoom is 105psi. Any help would be greatly appreciated. Thanks
 

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: 1969 Evinrude 20hp compression check!

You are in good shape so long as the numbers are above 100 lbs and within 10% of each other.
 

beavis331

Cadet
Joined
Sep 29, 2006
Messages
6
Re: 1969 Evinrude 20hp compression check!

Thanks Guys
I didn't really think that there was any thing to worry about. He has some issues with it not wanting to idle. I'll have to go through the carb for him.
Thanks again
 
Top