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 ...

In racing, spark plugs are practically a disposable commodity. Use them for a while and throw them away. If the engine starts acting funny, replace the plugs just in case. It's cheap insurance and ...

Gasoline internal combustion engines need three fundamental things: fuel, oxygen, and spark. The sexy aspects of modifying cars are focused on the first two elements: Double Pumper carburetors, ...

Swapping out spark plugs is, next to changing your oil, one of the most basic, straightforward bits of maintenance you can perform on your car. Spark plugs go bad over time, so it's important to keep ...

Side gapping spark plugs can slightly increase horsepower and improve fuel efficiency. However, this DIY mod comes with a major downside for longevity.

The spark plugs in a gasoline engine are not universal, one-size-fits-all components. Plugs are made of a variety of materials with different electrode setups and thread configurations, and knowing ...