99' 5.4 issues
 

My 5.4 is having ignition troubles- put it on the scanner and it jumps around missing cylinders missing- 1 will miss then hole # 3 then 5- then 6 then 8 all over the board no pattern or anything. Going to start with new plugs first after that I suppose I'll go with a new set of cops. Unless anybody has any ideas or knows of something else to try or look for.

That's what I'd start with.....