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 ...

It doesn't matter what type of vehicle you drive or which type of spark plug you're using. If your car has an internal combustion gasoline engine, it has the potential to eject a spark plug — although ...

Part of the allure of building an engine is the challenge you find within the smallest details. Checking parts down to the thousandth of an inch is part and parcel to making reliable horsepower. While ...

For the average stocker in good running condition, spark plug selection is a cinchchoose whatever brands on sale, look up the plug part number in the catalog, and go down the road. At the opposite ...

If you are the owner of a Ford truck with a three-valve (3V) modular V-8 or V-10 engine built from 2004 thru 2007, you have either faced the misery of broken spark plugs-or you will. The Ford 4.6L, ...

A spark plug is an electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed aerosol gasoline by means of an electric spark. Spark plugs have an ...