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 ...

We’ve all had this happen at some point while tightening hardware: It feels like it’s snugging up nicely, and then it suddenly seems to tun too easily. Or maybe you were removing stubborn hardware and ...

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 ...

The space, or gap, between the center and side electrodes needs to be an exact distance across; otherwise, your plugs don't fire efficiently. Adjusting the distance between the two electrodesis called ...

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 ...