Dear Mike: My pickup came new with those expensive spark plugs that never need changing. Of course I needed to change them after the engine started to misfire, at about 120,000 miles. Two of them ...

View post: 1970 Pontiac GTO For Sale With 61,760 Miles How often you need to replace the spark plugs depends on a variety of factors like the type of car you drive, how you drive it, and its mileage.

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 ...

Spark plugs are not designed to last forever and at some point they’ll reach their life ending due to carbon deposits on the tips or a crack in the ceramic insulation. Replacing them is an easy task ...