Spark Plug Opinions

[Propflux01]

About an eye dropper of gasoline into the top of the carb will tell us a few things

Such as ?

 

[Propflux01]

Don't worry about spark plugs. Back in the late '50s Hot Rod magazine had an extensive analysis on spark plugs which included the comment that spark plugs on magneto systems have high endurance and don't suffer the wear as other ignition systems. My outdoor power equipment is 40 - 50 yrs old, most with their original plugs. I've had to replace coils, head gaskets, fuel lines, etc. Some of the plug electrodes are showing some wear but no starting / missing or other run problems.

I just changed them as routine, as after the carb I had already purchased them for PM purposes. That's why when I pulled them out, I was a bit surprised at their appearance.