I have had my XJR6 parked up in the garage for some time (4 years or so) and decided it was time it came out again to get it roadworthy. However it wouldn't start. Plenty of spark to the plugs but on opening up the fuel rail there was no fuel at all. I assumed fuel pumps so pulled the tank and removed the pumps to check them on the bench. They whirred and emptied the petrol out of them so I assume they are fine, or are they???

Is there a test I can do to them to make sure they are pumping at the correct pressure before I put them back in. I don't really want to be having the tank out twice if it does turn out they have 'part failed'

Other than this I am wondering where to check next, Fuel regulator maybe?