Home › Forum › Ask A Member › 1974 Johnson 15 hp runs on 1 cyl at low speed › Re: 1974 Johnson 15 hp runs on 1 cyl at low speed
October 7, 2016 at 2:49 am
#45359
I had a spark plug lead "leak" and run down the porcelain,from the boot to ground on my 76 9.9. I noticed that the boot was installed further onto the plug than the other cylinder that was behaving itself. i pulled the plug boot off,cleaned the porcelain reinstalled the boot not as far this time and the problem stopped. I guess the path of least resistance came into play in this case, the porcelain cleaning may’ve been a factor ,especially once a carbon path develops.
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