I have a 1996 Ford Explorer V8 5 liter how to misfire the fourth piston found out it was a spark…

I have a 1996 Ford Explorer V8 5 liter how to misfire the fourth piston found out it was a spark plug wire changed it. Continue to have shakes and a rough idle. The catalytic converter started smelling like rotten eggs but I have loss of power still can you please identify the problem

More to read in Ask Scotty
false