I have a miss when I'm in OD or when I try and accelerate or when I lug it. It sputters until it downshifts. I went to AZ and the scanner said it was a miss in #8.
I replaced the intake manifold 4000 miles ago. and also replaced the spark plugs and put in excel coil packs. and i replaced the No. 8 injector today, its still has the sputtering in OD. What should I try next ?
Should I replace next, the spark plug, coil Pack or fuel filter.

Thanks in advance.

 

Some here don't like the Accel coils and claim early failures when using them.

 

Stick to Motorcraft and did you replace the boot on the coil pack and pack it with dielectric grease?

 

No I didn't use the grease you mentioned, I still have the motorcraft coils I took out. I think I will take the Accel coil off. I bought the Accels because the price was right and I thought they were a top of the line brand.

 

You can get a 10 pack from Global for 90 including delivery, but you have probably seen that already on the "damn coil pack" thread.