View post: REI Has a 'Comfortable' Rain Jacket on Sale for Almost 50% Off This spark plug tester features an innovative dual-socket design, allowing you to test two spark plugs simultaneously. By ...

Simply put, getting the maximum power from any race engine is a function of the temperature, pressure and timing of combustion gases in the cylinder. Since it would be expensive and impractical for ...

All spark plugs may look the same to the untrained eye. Unfortunately, nothing could be further from the truth. For starters, spark plugs come in many types that are mainly differentiated by the ...