1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 5:01 pm
It will hit on it every once in awhile but for the most part it's dead. Put new plugs in it,,,nuttin, still only runs on one cyl,,,, any motabote mechanecks here???
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1979 Johnson 25hp dropped a cyl,,,
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Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 5:05 pm
Two things.... Have you tried to see if it is firing steady by grounding the plug and have you pulled a compression test?
Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 5:42 pm
not real familiar with this motor, but if you have 2 coils swap coil to see if problem moves with coil. if it moves replace bad coil
Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 6:56 pm
just a finger in the hole for compression. Felt pretty darn goodteecro wrote:Two things.... Have you tried to see if it is firing steady by grounding the plug and have you pulled a compression test?
no spark when I pull the plug and hold it against the block
Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 6:57 pm
it does have two,,,, I will look into swaping them,,,,, thanksr&s20 wrote:not real familiar with this motor, but if you have 2 coils swap coil to see if problem moves with coil. if it moves replace bad coil
Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Mon Apr 13, 2015 7:13 pm
sounds like coil to me... 
Re: 1979 Johnson 25hp dropped a cyl,,,
Posted: Tue Apr 14, 2015 6:00 am
I agree. A coil would give that symptom of firing only when it feels like it (has the correct conditions to do so). I'd do what was suggested, and swap coils to see if the problem switched to the other cylinder.curtiscapk wrote:sounds like coil to me...
Good Luck.
