What is a resistor spark plug?
A Resistor spark plug incorporates a ceramic resistor of 5k ohms to suppress ignition noise generated during sparking. Resistor plugs prevent electrical interference that can disrupt car radio reception, two-way radio and cellular phone operation. This type of spark plug also prevents electrical noise from interfering with the operation of the computer in the engine. Note: As the resistor spark plug has an incorporated resistor, some people think that it has adverse effects on start-up, acceleration, fuel economy and emissions. However, this is wrong. It does not affect engine performance so do not hesitate to use it.
