98 Jeep Wrangler Will not start

My jeep will turn over fine but will not start. It has never given my trouble, this is the first time. Where do I start.

Is your check ingine light on?

Is your check ingine light on?
The check engine light comes on while I am turning the engine over but then goes out. The engine continues to turn over but does not start.

The check engine light comes on while I am turning the engine over but then goes out. The engine continues to turn over but does not start.

May be the crankshaft position sensor.

POSSIBLY FUEL, FUEL PRESSURE FROM PUMP.
not too hard to troubleshoot the pressure.
Next Ignition, etc. need more help from you.... miles, 4 or 6 if you didn't already say it.. Everything under the hood is fine ??