Turns over but won;t start - 2000 Jeep Grand Cherokee

Hello,well there are only 2 things that make any engine run...fuel and spark.. #1. to check if your getting spark you want to use a pair of pliers with rubber grips( if not you will get shocked ) then pull one of the spark plug wires off the plug (and if you have an old spark plug laying around you can put it on that wire turn engine over and see if you get a spark.) and holding it a 1/4" inch away from plug(or any metal surface of frame) have someone else turn engine over and see if your getting any spark?( its easier to see spark at night.) #2. if you have spark,then its in the fuel system.( will be your fuel pump,fuel pump relay,clogged fuel filter,ect.) if you dont have spark,it will more than likely be your ignition coil... good luck...yz-maniac.