Tip on blow-out spark plugs: Don't overtighten either

I don’t know why, but it seems that whenever anyone posts here that their plug blew out, it’s always a Ford.

We’ve had long debates about the use of torque wrenches for plug. For many years I never used one, but I go back before aluminum was everyehere. Now, after having seen so many complaints about stripped threads, I believe in them and use one myself. Some here, very experienced people, don’t believe in them.

I never use lubricant or antiseize on plugs. As a matter of fact I’d wonder if a coating would adversely affect the ability of the treads to ground out properly by creating a resistive junction. Sparplugs do electrically ground vis their threads. Like others, I’ve never had a problem.