Johnson 3HP 1958

MK522fins

Cadet
Joined
Feb 8, 2012
Messages
19
Hi i have a 1958 3HP johnson outboard model # JW-14 it runs at full throttle but once i slow the motor down it and put on the start position it stalls out I've cleaned the carburetor out but it still does it. any help would be nice thanks
 

1946Zephyr

Vice Admiral
Joined
Oct 21, 2008
Messages
5,556
Re: Johnson 3HP 1958

I would check your ignition system over. You may possibly need to clean and set your points, or your coils may need replacement.
 

kbait

Commander
Joined
Nov 13, 2007
Messages
2,486
Re: Johnson 3HP 1958

Check compression, and spark w/a tester J6C plugs gapped to .030". If that's all good, you likely need another go at the low speed circuit of the carb.. I'm assuming you have the low speed needle turned out 1.5 turns from gently seated? If it's set too lean, it won't run (well) at less than 1/3 throttle. Also, did you replace the needle jet packing? If it's leaking around the needle, you cannot dial it in to idle. Good luck!
 

kbait

Commander
Joined
Nov 13, 2007
Messages
2,486
Re: Johnson 3HP 1958

.020" Top secret files at the top of this forum will steer ya through most anything.

Good luck!
 

MK522fins

Cadet
Joined
Feb 8, 2012
Messages
19
Re: Johnson 3HP 1958

OK i cleaned and regapped the points but for some reason it ran even worse the only way it starts is if it is on fast.
 

MK522fins

Cadet
Joined
Feb 8, 2012
Messages
19
Re: Johnson 3HP 1958

OK i just realized that i set the points wrong, after i regapped the points the second time it ran better then it has ever ran.
 

kfa4303

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Sep 17, 2010
Messages
6,094
Re: Johnson 3HP 1958

HI MK22. On a motor that small, I don't think either prop would make much of a difference. If anything, I believe the 2-blade prop would be slightly more weedless than the 3-blade version, and less likely to foul on fishing lines and such. It's sort of a "six of one, half dozen of the other" sort of thing. More important, will be setting the motor to the right height on the transom to get the best performance out of it. My 3 hp Gamefisher would push me around at about 6-7 mph alone, in my flat back, aluminum canoe and pushes my 14' fishing boat around at about 5 mph as a back up/kicker motor.
 
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