sparkplug wires

B

baysport

Cadet
Joined
Jun 9, 2007
Messages
16
I have a 1982 johnson 115 that has not had its spark plugs changed in a long long time. How often should I change and what are the effect of using the old ones? thanks for the info, Brad
 
reload

reload

Petty Officer 1st Class
Joined
Jun 29, 2004
Messages
368
Re: sparkplug wires

I use spark plugs for a full season unless one gives me trouble. My motor sees about 10 to 15 hours a week. I have not ever been able to see any change in the operation of the motor by changing plugs unless it has failed completely.

When I raced cars in my younger days, we would change plugs every run. In those days we were counting tenths and hundreds of a second, still I don't remember when I could say the plug cost me any time.
 
M

Molaker

Petty Officer 2nd Class
Joined
Jul 10, 2007
Messages
175
Re: sparkplug wires

If the wires appear to be original or have any appearance of deterioration, I'd change them - it is a 25 year old motor. Then you should be good to go for another 25 years.
 
Last edited:
HighTrim

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: sparkplug wires

they;re a hard thing to diagnose since they corrode from the inside out. If you dont want to change the entire wire, which you probably should anyways if havent done for a long time as you say, you can always buy new boots, which comes with new springs that attach to the plug. You just cut the old wire back, press the new spring in, spray some WD 40 on it, then slide the new boot over.
 
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