Land Rover Repair: 2000 land rover disco 2 wont start

Question
After i put gas in it, it doesnt want to start. It will start fine before but once i.stop and put gas in it, it acts and sounds like its not.getting any gas. I replaced the crank shaft sensor which has corrected it shutting off while driving. Just trying to figure out why it doesnt want to start after i put gas in it.

Answer
Your first step should be checking for spark.  If it has spark, look next to fuel pressure.  If there is none, find out why the pump isn't starting.  If no spark, look at the crank sensor and cam sensor.  I know you say you changed one but there could be an issue with the second.