Testing a vro fuel pump on fuel side only ? help please

[phillnjack2]

I have 2 vro fuel pumps, i dont know if any of them is good or bad, i wont be using the oil side for sure as
i do know both of them are bad on the oil side.
what is the best way to test the fuel side of these pumps to know if they are any good or not ?
what sort of pressure does the pulse give or take when engine is running ?

i have blown and sucked on the pulse and can feel one of the pumps is moving inside ,but only a little bit !!!
is this any good for testing or am i wasting my time ?

i dont get any fuel leaks or air leaks from the fuel fittings or round the seal etc.
the one way valves seem to also be working good.
i cannot find any problems with the diaphrams .

so how or what do i need to check these out to know if they are any good
.


phill