1971 Evinrude 60 hp 3 cylinder sea foam, now won't start

[IWishMyBoatRan]

So my compression was as follows..
1st Cylinder - 90
2nd Cylinder - 110
3rd Cylinder - 120


Read around, figured some sea foam MAY help the top cylinder, doing a decarb.
Mixed 50:1 in a gallon of gas, then poured 3/4 of a 16oz bottle of sea foam in a gas can.
Motor started up, ran for about 10 minutes, then died out on me.
I let it sit for awhile, tried to fire it up, nada..
Even spraying some in the carbs, nada.. Sprayed some in the spark plug holes... nada...


Ideas?

 

[boobie]

Re: 1971 Evinrude 60 hp 3 cylinder sea foam, now won't start

Did you check or replace the spark plugs ??

 

[IWishMyBoatRan]

Re: 1971 Evinrude 60 hp 3 cylinder sea foam, now won't start

Yep, they had some fuel on them. Now, the fuel pump has been acting funky, but I have a rebuild kit on the way. When I pulled all three spark plugs, they were a bit dirty. I cleaned them off, it tried to fire once without the top (low compression) plug in.

I'm about ready to call it quits on this engine and call it a loss.. B.O.A.T. -- not worth it, maybe I'm just getting discouraged. The boat repair guy told me to not waste my money with it, that it's a dinosaur. But I'm determined.

 

[IWishMyBoatRan]

Re: 1971 Evinrude 60 hp 3 cylinder sea foam, now won't start

edit -- It DID fire once without the top plug in, but won't with it in.