Why do spark plug wires have high resistance?
Normally, spec is 10,000-15,000 ohms. In my mind, low resistance would be better, but if manufacturers wanted low resistance, specs would be way lower.
What is the benefit of having high resistance?
Normally, spec is 10,000-15,000 ohms. In my mind, low resistance would be better, but if manufacturers wanted low resistance, specs would be way lower.
What is the benefit of having high resistance?
Comments
I believe the more resistance in the wires holds more current so when spark plug needs to fire it fires with max power everytime on time
V=IR
Increasing resistance while holding current constant will yield a higher voltage at the spark plugs.
So i was right? right? The lil pyramid
Well…basically don’t mess with it unless your multimeter says OL…if it does replace it. If not, leave it be
I see what you’re saying, but im going to politely disagree.
Fun fact. Spark plug wires aren’t tuely copper or metal. They’re actually a carbon “wire” that transmits the electrical charge to the plugs.
And I was taught resistance in a plug shouldn’t exceed 25k ohms, but that is a generalized rule of thumb for old American cars when you don’t have a spec to check.
The high resistance of the ignition wire is to reduce electrical noise to the radio and the cars computer and other electronics, there is no benefit for the spark/ spark plug firing.