The motor is a 5.0 fuel injection. It runs like a motor that has a vapor lock. I have changed the internal fuel pump twice, the fuel filter a dozen times. The Ford dealer here told me it was the upper manifold gasket. That was changed, but did no good. The car only has 65,000 miles on it. If you have any ideas I would greatly appreciate it
RESPONSE
Would be helpful if you had any check engine light codes. Post them below if there are any.
My guess would be a clogged converter or faulty MAF sensor.