2007 Vectra 1

2007 vectra 1.9 diesel. Misfire on cylinder 1, misfire jumps between cylinders, replaced injector but problem still persists. Checked wiring and all 4 injectors have a feed.

All 4 injectors are getting fuel, swapped injectors round but still misfiring on cylinder 1.

timing on crankshaft was out by 2 teeth, set timing properly with new belt kit, checked keyway and all ok.

possible bent valves? Stumped on this one. Verus scanner comes up with no codes untill you unplug injectors so wiring between injectors and ECU is ok.