Question: I have a 2006 Kia Sedona, and it randomly misfires roughly once for every week of normal driving and once after each carwash. When it happens, I pull over and shut off the car. Then, I turn ...

The spark plug is essentially a high-voltage “bridge” that ignites gas vapors inside your engine and makes your car go. On average, spark plugs should be replaced every 50-100,000 miles—the good news ...

Worn ignition component gremlins are mysterious little buggers. Ignition misfires can be confused with fuel mixture or delivery problems. Even ambient humidity can affect the ignition system—making a ...

Most spark plugs come from the factory with a pre-set plug gap that is recommended for the application. Experimenting with wider or tighter gaps is one way to dial in your engine’s performance, but ...

You have to be careful about swapping spark plugs around, but some wrenching enthusiasts might wonder if spark plug wires are important keep track of, too.

No two racecars are exactly the same. We all have our own little quirks or favorite ways of doing things that make even tube-frame cars from the manufacturer a little bit different. Changes to the ...