My 2005 Mustang GT has had an intermittent valve tapping noise since new. Just before the 3,000 mile oil change I took it to the dealer and asked if they had heard of this problem. They said no. But that I should change the oil drive it awhile and see if the noise stopped. I guess their idea was that a lifter had a piece of trash in it. I changed the oil as suggested and the noise stopped for a short time.
Well it has been doing it more often now and the car has just over 7,000 miles. I took it back yesterday to the dealer and they actually heard the valve noise this time. I comes and goes at idle, left bank. The tech that listened told me that they have been replacing the lifters on the side suspected of making the noise. He said to bring it in one day and leave it. They will order the lifters have them overnighted and fix it the next day. The job will take about one day to do.
Has anybody else in here had this problem? It seems that Ford may now realize they have a lifter problem on the three valve heads and are fixing them no questions asked........