Rick,

Good point. When you say you had a "bad nailing" for several hundred miles, did you hear a noise similar to an engine or rod knock when you accelerated? Two days after I had the new injectors installed, I punched the accelerator to see if there was any change in acceleration and I heard what sounded like a rod knock which I had never heard before and it was unnerving. When I backed off on the pedal, the knock disappeared. You may be onto something; a bad new injector. Thanks!

Skip