Space Cowboy

I had a mechanic do it at their shop. Not sure

nickpatton_189

iTrader: (2)

Sounds like a bad plug. I had my plugs changed but shortly after one fouled out. Took it back to the mechanic and found that the porcelain was look or spinning and made it foul out.

Space Cowboy

So I had one of the best places in all of Denver work on my truck, no one could find the issue. Keller Brother discovered that cylinder 8 was not firing correctly. I asked that they pull and replace all the plugs and boots. When they did this, they discovered that the dealership that charged me for replacing them, never really replaced them.

The plugs have been replaced, along with the boots, which really needed to be replaced and this truck runs like a charm. It hasn't run this well in about 5-6 years, it's awesome.

Thanks to this forum, I had them replace it with Motorcraft plugs and the boots, problem is gone.

Manuellabour247

So the dealership didn't replace any of the plugs or just some of them?