Transit cut out and wont restart

[jammy100]

Hi i have a 01 90psi transit it cut out about a month ago and luckily i was on a hill and just clutched it and restarted it, the van went fine for the rest of month then did same but now wont restart. I checked all relays and changed the crank shaft sensor, also there is diesel at the injectors. The van turns over fine and just wont fire its as if its immobilised. Any ideas please its not been on a computer as i live very remote and a long tow to nearest garage with a computer. Would much appreciate any ideas. Thanks James