Non Start

[Paulpen]

Hi everyone im looking for a bit of advice for a friend with a R32 GTR.

Last week he went for a drive and then parked it up outside his house and everying seemed normal. He then went to start it 2 days later after some rain and it will just crank and wont fire.

Ive had a look at many things so here is the list done so far :

Checked for an alarm / immob etc and non fitted.

Checked all fuses under bonnet and dashboard.

Checked all plugs are connected on the engine.

The fuel pump can be heard to prime and if taking the pipe off after the filter it flies out there.

Took the plugs out and they were dry after alot of cranking which was odd so checked the wiring to the injectors. Think they are all getting 12v so guess they are switched to earth by the ECU ?

Checked the wiring at the main coil pack loom (3pin) and the coil packs and they have 12v and earth and im guessing the other wire is the ECU switch ?

After that I unbolted the CAS and slowly turned it by hand with the ignition on expecting to head both the spark pugs and injectors fire but nothing other than what I can only describe as a "whoosh" noise that I believe to be fuel moving under the inlet.

Does anyone have any ideas on what it can be or have anything else I can try as it would be very much appreciated ?