Disco 1 V8i 3.5 (92) will not start

Hi people really need help i have a Disco 1 V8i 3.5 (92) will not start iv put new starter motor new ht leads n dizzy arm n cap new battery new coil new fuel pump it now turns but will not fire up got it jump started other day drove it for a few hour was fine next morning wouldnt start was told it was the coil so i put a new one on still nothing need help please

Somebody please help i really want to get my lil monster running properly