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 ...

How often you replace spark plugs depends on the type of plugs you have. You may have 30,000-mile plugs, or if the plugs have platinum tips, they may be good for up to 100,000 miles, although some ...

Before you undertake any of this work, re-read the article "Deciding if you should do the job yourself," and if your vehicle fits even one of those descriptions, don't try to do the work in this ...

Few things disturb us more than the bewilderment of a broken bolt or seized pipe plug in a casting. You’re at a loss for how to get the darned thing out. This is when you have to slow down and come up ...

Spark plugs, which screw into the top of an engine’s cylinders, create the electric spark required to ignite the compressed air-fuel mixture in gas-powered engines. The right type of plug and the size ...