Valve lash
no smoke, car runs normal.
I did some research on various tech sites and there were other complaints regarding ticking or tapping from engine during warm up, Some one even mentioned a tech bulliten from Ford (will try to find it). The fix is a valve lash adjustment to culprit cylinder and the ticking or tapping went away, they were pleased with the repair. Since the car is still under warranty we'll let Ford fix it. Don't know when the noise started in my wife's car, I very rarely use it and she brings the car in for service. One less thing for me to worry about.
Thanks for your help, if you want I'll let you know what the dealer says
steve
saw the picture of your car - looks ready to fight.
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