Non start discovery 2 Td5 1995

Hi everyone I am new to the forum. So not sure if I am even posting this in the right place. I am from the midlands and have a 1999 discovery 2 Td5. With a list of problems as long as your arm. At the moment she doesn’t want to fire, I couldn’t get her started yesterday. Then she randomly fired when I was giving her a sniff of contact cleaner, this made me think I had a fuel issue. Once I got her started I drove round the block parked on my drive turned her off so I could unlock my front door. By this point she had given up with life once again. With nanocom plugged in and jump leads connected to my other car. I am getting over 14v but only 190rpms on crank, after googling and finding out they need to be around 300 to engage the injectors. I put another cps and engine loom on that I had in the garage. Annoyingly this made no difference. Both cps have 1.3 ohms with multimeter. There is a hissing noise from the regulator when priming so I swapped the seals out, still no difference in starting or hissing noise. The fuel pump makes a obvious humming noise. Not to sure where to go from here as I am not keen on firing the parts cannon at it as it’s a old scrapper that I only want to use over fields and lanes. I also have no faults in nanocom besides air con. There’s probably a lot more information I have missed out. Please any help would be much appreciated. Can you test in tank pump with out pressure gauges?

Cheers James

Hello and welcome
Best to ask over in the disco section of the forum