A spark plug thread chaser isn't always the answer, but it can make a big difference when you're installing fresh new plugs.

Damaged or neglected spark plug threads can turn a quick tune-up into a costly engine repair. From misfires to stripped threads, prevention and proper repair techniques are key to keeping your car ...

My question is about spark plug reach. I recently removed my intake, and while looking at one valve that was near max lift, I could see the electrode was at least 1/8 inch in the threaded hole. I ...