Spark plugs are integral components for gas-powered internal combustion engines. These diminutive devices create the electric spark that ignites the fuel and air mixture inside your motor. When ...

Misfiring, rough idling, poor acceleration, and decreased fuel efficiency — the four ominous horsemen of bad spark plugs. Nobody wants to ever get to that point before desperately changing such a ...

And you can do it safely, in under an hour, and for less than $50. Credit... Supported by By Tim Heffernan Visuals by Clark Hodgin After 16 months, my home renovation is nearing a happy milestone: ...