Hello. When I bought my pickup there were brand new spark plugs that came with. Its a 1981 Ford with an Inline 6 cylinder. Well over the time that I've run this truck, the package broke open and before long, the spark plugs were all over the place. Now, its not running right and needs them. Well I found them all back and found a problem. The tips are all bent. Anybody know what they're supposed to be gapped at? Or would I be better off getting new ones? Thanks!

 

0.035" should do the trick. I've run the plugs anywhere from 0.025-0.035 with satisfactory results.