1957 johnson fd-11 18 hp ignition

codykoke

codykoke

Petty Officer 3rd Class
Joined
Jun 23, 2011
Messages
83
I just picked up this motor and to my surprise the coils have been replaced already,but when I do a resistance check on them they have different resistances. They are different brands. Is this a problem. One is about 4.5 k ohms the other is about 7 k ohms or so.
 
kbait

kbait

Commander
Joined
Nov 13, 2007
Messages
2,449
Re: 1957 johnson fd-11 18 hp ignition

I'd put it together, cinch down the flywheel key, but not torque, and check spark. If you get a 1/4" snappy blue bolt off both leads, you're good, and torque 'er down.

Good luck!
 
HighTrim

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: 1957 johnson fd-11 18 hp ignition

I have found this on a couple motors. They will both spark, I personally try to match them up, but have a stockpile of coils. May just be my imagination, but seems to idle better with matching coils.
 
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