Check engine light came on and had a miss fire on #5, replace sparks & coil.

yes sir, on idle and when I hit the gas and the acceleration (not speed odometer) passes 3 the check engine light flashes and the jeep sounds an alert alarm. It starts to run a little rough. I even swapped coils (#1 & #5) to see if the new coil was bad, but I still get the miss fire on #5.

You need to check compression on cylinder #5

Are you referring to the spark plugs, probably to tight?

An engine is basically a big air compressor so you need to remove the spark plug insert a compression gauge and crank it over you should have at least a hundred pounds of pressure in the cylinder

Okay, thank you. should I try changing out the fuel injector?