Installed new plugs today three times.
Put in the autolite's and started it up and it had a miss and flashing check engine light. 
So took each one back out one at a time and checked wiring plug, made sure the coilpack was in good. It started it after each one and the miss did not go away. So I reinstalled the old plugs, they weren't to bad and it runs fine. 
Now the auto parts guy said not to gap these plugs so i didn't, But the gap was .50. Do you think that was the problem or just bad plugs.
