Hesitatation/intake back fire/no codes

[hampsterzone]

Another mechanic checked my truck out with a real time scanner. No problems showed up, injectors were great. Basically, my truck appeared to be perfect. He power broke my truck to cause it to be under load and misfire. Nothing showed up on his scanner. We ended up pulling the Autolite plugs that were installed on 12/22/10. They looked like crap! Looked worse than the originals that had 99,000 miles on them. Put new Motorcraft SP-515 spark plugs in and it runs like new. Ford was right, only those plugs should be used. I paid out lots of cash for labor because of this problem. I just want to let everyone to know that this is a rising problem seen at the local shops as more and more trucks need new spark plugs. I basically put new coil packs and cam sensors which was $540.00 all because these horrible plugs failed in less than 2 months. Hope this helps. Some can say I wasted money but there was no reason at all the believe my plugs were faulty with no codes and having been just replaced. Anyways, I am happy my baybee runs like new!