Join Date: Jul 2003
Location: Arcade, New York
No, single gap plugs are not pregapped. For one thing, the same plug may be used on several different engines. I don't know where your pep boys people ever got that info, but just check with the manufacturer. They advise gapping them. If you are damaging the electrodes, you better learn the proper way to gap, then. In my 40 some years of driving and changing/gapping my plugs (I learned the benefits of platinum plugs close to 40 years ago) I have never seen or heard of a broken electrode. I assume you mean the ground one; if you mean the center one, then DEFINITELY see my comment above about learning how to adjust the gap.