1998 chrysler voyager will crank but wont start

Google is your friend for this issue. You need fuel, air, spark and compression to start an engine. Check for fuel pressure by pressing the valve on the fuel rail. Should be a nice squirt from there. Then check for spark by removing a plug and reconnecting the plug wire and place it on the engine. Have a friend crank the engine and observe the plug. Should be a BLUE spark. If its yellow or orange it may be "weak spark". Check a couple different plugs. Without more info, theres not much else I can suggest. Test compression if you can find a tester.