Did a search but I do not have enough time to continue with it.

Changed plugs a month ago and everything has been fine until this morning. Rough idle and no power. Thought it was bad gas until light came on. Threw a code for miss in #3. It sat for an hour or so and now it seems only to really miss under boost. By the way the truck was outside last night during the downpour. Is it condensation in the boot that is slowly drying out? I was thinking of putting #3 coil pack on another cylinder and seeing if the code changes. Any suggestions?

During the spark change I stayed with the stock plugs, gapped them correctly, boots looked good so I cleaned them and greased them back up.

 

I've always found that when I do plugs, it's better to change wires too. It could very well be a bad coilpac, I know they had alot of trouble with the earlier coilpacs because they were cheap, supposedly they upgraded them, might want to check your chip if equipped sometimes contacts need very light cleaning. Hope it helps.

 

Truck runs fine now and the service light turned off. I'm thinking I need a new boot seeing that I did nothing to fix it and it is fine now. It had time to dry out. Going to check the plug just to be safe.