so frustrated!!! with 1964 60 hp evinrude, only half power at WOT!!!!!

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perron582

Cadet
Joined
Jun 6, 2011
Messages
20
does anyone know what else i can try? not sure what do next, all fuel lines have been changed including tank, i have been using sea foam in the gas since i got this motor, carb kit installed, new fuel pump, geting spark in all the plugs, used a tester on all the plugs and wires, compression tested they are all within 10% of each other, new plugs, i do have a exhaust gasket leaking under the power head, but i tried running it on the lake without the engine cover and still the same, new water pump. please anyone with anymore help would be greatly appreciated
 
O

Oldyellow71

Seaman Apprentice
Joined
Jun 27, 2011
Messages
33
Re: so frustrated!!! with 1964 60 hp evinrude, only half power at WOT!!!!!

I would try to let it get warmed up on muffs, then with the plug puller tool try pulling one plug wire at a time. See if one doesnt change the rpm's. I had a coil that would stop working after warmed up on my 65hp johnson hydroelec shift. I am experiencing the same prob right now as you with my 80' 75 hp, this trick didnt do it this time for me, hopefully you get some results.
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: so frustrated!!! with 1964 60 hp evinrude, only half power at WOT!!!!!

Throwing parts at it is a shortcut to frustration, perron. That is where the old wrenches' saying comes from: "If it ain't broke, don't fix it".

Oldyellow's advice is good, it is diagnostic and doesn't cost you anything to find out that spending money did no good at all. It will tell you which cylinder (or cylinders) is not making power so you can narrow down your troubleshooting to that cylinder or pair. Side by side dead cylinders have a bad carb, over under bad cylinders have a bad ignition system.

If you drop rpm when any cylinder is disabled they are all working at idle, so your trouble could be linkage and synchronization.

Just remember this: Part replacement is the most used, most expensive and least effective troubleshooting method known to man. Before you replace a part, demonstrate that it doesn't work.

Good luck with that old locomotive. :)
 
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