'67 Johnson 6hp stalls after a few minutes

[lorax]

old two cylinder Johnson starts and runs well for a few minutes and then stalls. You cant start it again after that.<br /><br />Any suggestions?

 

[JB]

Re: '67 Johnson 6hp stalls after a few minutes

Hi, Lorax.<br /><br />After a few minutes, huh?<br /><br />Could be a fuel supply problem, like a restricted fuel tank vent or line. Try squirting some premix directly into the carb when this happens. If she starts then quits again, she is not getting fuel enough.<br /><br />If that doesn't do it, go to the FAQ section and troubleshoot for "Outboard Wont Start".<br /><br />Good luck.

 

[Xcusme]

Re: '67 Johnson 6hp stalls after a few minutes

Lorax,<br />Are you sure it's not overheating??

 

[lorax]

Re: '67 Johnson 6hp stalls after a few minutes

Thanks for the comments.<br />Xcusme - I've got water coming out the discharge area and it seems pretty cool.<br /><br />JB - I'll try that. I'm testing it on a saw horse. The fuel tank is on the ground. Could the height difference be a problem?<br /><br />Thanks again.

 

[ob]

Re: '67 Johnson 6hp stalls after a few minutes

I'm testing it on a saw horse. The fuel tank is on the ground. Could the height difference be a problem?<br /><br />

Most definately.

 

[StarTekh]

Re: '67 Johnson 6hp stalls after a few minutes

Hello jon here Montreal.. sounds like your coils are getting hot and shorting out .. see if u have spark after the motor has cut out .. if not 2 coils and condencers are in order.. well worth it , keep me posted<br />

 

[horsefly38425]

Re: '67 Johnson 6hp stalls after a few minutes

if you pump the bulb and it starts its fuel raise the tank up see if it helps /if it cools before it starts coils are to close to mag/ck air gap

 

[Bill kubiak]

Re: '67 Johnson 6hp stalls after a few minutes

How do you check the air gap?

 

[lorax]

Re: '67 Johnson 6hp stalls after a few minutes

These are great suggestions!<br /><br />As soon as I get a chance I'm going to systematically try your suggestions and report back.<br /><br />Thanks

 

[BubbaBaxter]

Re: '67 Johnson 6hp stalls after a few minutes

Sounds like a choke problem. If your choke isn't working correctly, engine will run till it warms up and then ... nada. With the cowl off, make sure the choke plate opens when the choke lever is pushed in.

 

[horsefly38425]

Re: '67 Johnson 6hp stalls after a few minutes

i like to set air gap at about .015 if they /coils are to close they tend to run hot