Spark plugs - Resistor 'v' Non-resistor - effect on HT voltage #1450
Ever wondered what the difference is between a spark plug with an internal resistor is when compared to the older 'non' resistor type? Well, I have been curious for some time to investigate how, if at all, the HT voltage (spark voltage) is affected by these 'newer' plugs. After a little research I felt compelled to find out for myself & with the ideal motorcycle on the hoist now seemed the perfect time.... Andy Mechanic

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