2 6hp Evinrudes Died ????

[ozenine]

Guys, I am a little confused here.
We went fishing yesterday. I have one 6 hp 1970's Evinrude on the back of the boat plus I always take second one as spare. Second one is 1979 same model motor. We fished a bit which required a lot of start/stop on the motor. So one time when I decided to start it it would not start. I pulled choke (usually it is required for the first second or so top start) and it revved up. I pushed in choke and it died.
I did it few more times and it kept doing same - would run on choke but then it would die as soon as i pushed the choke in.

So I pulled that motor and installed second one. Second one did not have any troubles starting usually. Not this time! It started only with choke pulled and as soon as I pushed choke and reduced throttle it died! The only way it kept running was when the choke was off but throttle was near WOT.

My first thought was the common denominator - gas supply, but I used same gas for 2 trips before and had no issues. I can also blame dirty carbs (I have not cleaned them since got these motors year ago), but similar issue on BOTH of them????

I am really frustrated with whole thing, so any advice is greatly appreciated.
Oleg

 

[BUDDY123]

Re: 2 6hp Evinrudes Died ????

My guess would be the gas, since it happened to both motors the same day. Any chance water got into can or stored where it might have sweated. I would try different sorce or fuel before ripping anything apart.

 

[gdombroski]

Re: 2 6hp Evinrudes Died ????

The only way it kept running was when the choke was off but throttle was near WOT

Sounds like lack of fuel supply if both acted the same. If you have a different fuel tank or hoses I would try them. I had a similar problem and it turned out over time ethenol had gunked my old lines. Replaced them and worked fine. Of course another time it was caused because I didn't have the screw loose enough on the tanks air vent.

 

[samo_ott]

Re: 2 6hp Evinrudes Died ????

Sure sounds like a fuel problem to me assuming you used the same tank on both. I would try a different tank and hose.

 

[Patate]

Re: 2 6hp Evinrudes Died ????

Did you check compression, few years ago my brother and I were having each of us a 6hp (mine a 76 him a 78) the same day our head gasket blew, engine was starting but run only on choke.

 

[ozenine]

Re: 2 6hp Evinrudes Died ????

Thanks guys! I will be going to the store this week to pickup new hoses, old one is ..... lets just say it is Old. I will check compression for sure. Thanks for the responses.
If it is headgasket, it sould not be a big deal, right? Just take the head off, install new gasket and that is it? What do you think?