Help please RR wont start 1990 3.9efi

[RICHR]

Hi
As the nights are darker for longer now the old girl has decided she wont start.
Ive got a slow white spark aprox 1 per second{could be a bit faster but not a lot}
99% sure we have  fuel but have not wound it over and over and over .
She cut out on me on saturday so i walked home returned with the other motor and magic she started .Started loads of times sunday no probs .ok mon tue, Wed cut out on me once and this morning cut out on me in front of next doors drive so winched myself home from a tree in the garden.
So hope did not make her better
1990 3.9 EFI Petrol and lpg

Ah she wont fire on petrol or lpg
Thanks in advance for any help

Thanks
Rich

[Garth]

Is the engine turning
Do you have an imobiliser :?:

[Range Rover Blues]

If my battery is discharged it won't fire up, you nedd 12volts for the electronic ignition.