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Fuel pressure trends after pump shuts off?

760 views 2 replies 3 participants last post by  layson 
#1 ·
I have just installed a regulated return system on my engine. I found a few leaks and tightened them up. I am wondering the trend in pressure should be after the 20 second or so fuel pump run when I cycle the key to Run. Obviously ... it won't go up. When the pump stops running pressure immediately drops from 65# to 60#. Assuming no leaks, should pressure hold indefinitely or is it designed to slowly bleed off? The fuel system set-up has a back-pressure regulator (Aeromotive) in the return line to the tank.
 
#3 ·
Mine will hold pressure in the lines for a while. If it drops off real quick it might indicate a leak. Just keep an eye on it.
 
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