Yes,there was moisture/water found in the cylinders for unknown reasons. I spent about two hours cleaning out the moisture/water in the cylinders. I cleaned it out the best I could before replacing the Motorcraft spark plugs. No codes were thrown. When you drive it if you press the gas petal more then about half way there is a misfire or stubble there. Under light acceleration loads it drives with no misfire or stubble present. I am stumped what will fix it? The only thing I know is the spark plug wires are like nine years old they could be bad possibly?You say you found moisture in the cylinder? Please expand on this.
If you have a missfire there are many things that can cause it, did you pull codes? If it is a missfire the ECU would know.
Thank you for trying to help. I installed my eight brand new fuel injectors and my Mustang runs like new again. I thought this problem was electrical. I didn't know the problem with my Mustang was fuel related. You learn something new everyday.Hopefully this works out for you.