My good lady parked our FRV, went shopping came back and it just wont start. so far I have tried

The inertia cut out switch - seems ok

Changed the fuel rail pressure regulator valve

Changed the fuel rail pressure sensor valve

 

So the symptoms are that when monitoring  live data the Fuel Rail Pressure only goes up to 65 to 90 PSI with the old pressure sensor valve but the new valve shows nothing

Oddly the old pressure sensor shows 30PSI even when connected in to an empty fuel rail

Today I changed the high pressure fuel pump but still no change

I am obviously missing something that's staring me in the face. Does any one have any good ideas PLEASE

Sounds like a crank sensor issue to me, would measure if there is any output as no fuel pressure would be generated if no engine revs