2001 Ford Expedition 4.6 V8 running badly.Any help?

Is the wire or plug running to the coil damaged in any way? Start at the coil and follow it back as far as it goes. Look for nicks, cuts, melted wires or bad plugs/connections.

I had to change the plug earlier this year because it cracked and broke the last time I changed the coil pack. I used quality connectors I thought.

I would check the wires leading to the coil. When the plug broke where you able to get the broken piece back out?

I had the same problem I change my coil because my engine check light kept coming after I change my coil because that's what the computer kept telling in it was that I had a leak in my manifold in it went to my coils

I had the same problem I change my coil because my engine check light kept coming after I change my coil because that's what the computer kept telling in it was that I had a leak in my intake manifold in it went to my coils