Evening Mark and Alan,
you've hit on the problem I often have of identifying the system on which I am working. In the absence of clear engine codes/ecu labels/and pump types, I often resort to data bases. This particular system obviously has a pump pressure feed, the pump 'scoped poor on current, and the pressure appeared low. No figures given in any of the data bases to which I have access, hence the comment about Esi. Alan obviously has better search skills on the net than me, and I am beginning to believe that Mark just knows.
Once again, thanks for both your inputs,
Peter