2001 Nissan Pulsar wont start

Hi
After a 150km trip to our house vehicle would not start.
Battery is fine, starter motor turning over, can hear fuel pump. Took fuel intake hose off, turned over and fuel was coming out. Checked spark and spark plugs all good. It is a hot day but vehicle has now been left for over an hour and still not starting. Engine light has not come on. Never had problem with vehicle before except on this occasion when driving the fuel gauge dropped suddenly then rose suddenly. Vehicle is up to date with all services.
Thank you
:)