tj not starting

2005 LJ parked it the other night then went out turned key all accessories turned on headlights radio dash gauges but would not crank or start but can rapidly hear and feel the starter relay clicking when under hood and someome trys to Start it . Changed fuses and swapped relay Checked...

Hi. I am new to this forum. I have a 2000 Wrangler TJ 4.0L in the UK. Engine turns over but does not start. Fuel rail is full and shows pressure when release valve is pressed. I suspected problem was with ECU so had the unit reprogrammed in the States with the SKIM deleted in case it was an...