This is the end of this thread.
Thanks again for all of your help
Rebuilt the high pressure fuel pump with a new seal kit, fitted, started and no leaks, road tested, ok
Following day started the van and engine management light cam on, code fault, pressurer regulator, fitted a new one engine light is know off
So problems , ecu not sending the right power to crankshaft sensor, ( engine code and rev counter not moving when cranked, after ecu repair rev counter moved when cranked, no codes )
High pressure pump feed pipe valve stuck open, so no high pressure fuel from the pump