Before you undertake any of this work, make absolutely sure that you won't damage your car by attempting to fix the spark-plugs. Follow these steps to remove each spark plug: 1. Gently grasp a spark ...

The gap between the center and side electrodes needs to be an exact distance across; otherwise, your plugs won't fire efficiently. Remember: Gap new as well as old spark plugs, even if the package ...

Headers and spark plug wires rarely coexist in peace. Even with well-planned wire separators, one of those hot header tubes will eventually flambe the best of plug wires. The situation is aggravated ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...

Spark plug gapping may sound like one of those old-timey chores, like setting breaker points in a distributor or lubricating the frame, but having the proper spark plugs and ensuring they're properly ...

No two race cars are exactly the same. Sure you can purchase a rolling chassis from a builder that turns out 100 (mostly) identical cars a year. And you can use a body kit that uses sheetmetal ...

Spark plugs are essential to the running of a vehicle, helping ignite the mixture of air and fuel to provide combustion to the engine. There are three specific parts of a spark plug, a central ...

We may receive a commission on purchases made from links. When it comes to engine care 101, a spark plug replacement — also referred to as a tune-up — is an essential task. Spark plugs, as the name ...

For hot rodders, spark plugs are often nothing more than inspection tools that reveal whether an engine is running too rich, too lean, or just right. Street guys look for a nice tannish-brown tint on ...