I recently changed the spark plugs and one coil pack on my friends 2000 F-150 5.4L. I had to remove the fuel rail on the driver's side to achieve this. Upon completion the truck fired right up and ran great. A couple of days later however,she was unable to crank up her truck without pumping the gas a few times and turning it over a few times.Did I create this problem by installing the fuel rail improperly, after changing the plugs and the bad coil? Or does it sound like a new problem all together?