outboard quits after warm up

[clarkandamber]

I have a 1960 Gale (made by Evenrude) 35hp outboard on my boat. It starts up great from cold and idles nice and smooth until I try to give it some throttle or put a load under the engine. After about 5 minutes of that, I can put it at wot and it will rev right up like it's supposed to and the boat takes off. However, it lasts about 30 seconds and the engine dies just like someone hit a kill switch. I can restart it about 30 minutes later but it will run for about 5 seconds and quit. once the engine is cooled off completely (like the next day) it fires up and does this all over again. The only thing I can think of is maybe the engine is overheating(possibly a bad impeller?) and a thermostat has a kill switch on it. Only problem is that I can't find a thermostat on the engine. Am I on the right track or does someone else have any sugestions? any help would be greatly appriciated. thx<br />Clark

 

[tashasdaddy]

Re: outboard quits after warm up

coils, did you check when it was hot if you had spark to the plugs. when they start to go bad the get hot and short out, if discolored, cracked, or just old. i don't remember if these had a power pack on not. napa dealer possible place for parts, as they have a 600 page marine catalog, also seaway marine.com

 

[Kev]

Re: outboard quits after warm up

Definitely do a visual inspection of the coils. If one looks cracked or "exploded" then you have a bad coil. When bad coils get hot, they can stop sparking. When they cool off again, they can work normally for a while.<br /><br />I had a 7.5 that did exactly that. Ran fine for a while, got warmed up, ran like crap. Replacing the bad coil did the trick.<br /><br />Check it out. TD knows what he's talking about.<br /><br />Also, you might see the old part number molded or marked on your old coil. If you post that P/N, I bet someone can point you to the replacement P/N. I wouldn't be surprised if it was available through iBoats.<br /><br />Good luck and let us know what happens.<br /><br />Kev