magnafuel pump not holding pressure...
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magnafuel pump not holding pressure...
I'm running the mp-4301 pump with external regulator installed.... Shouldn't this pump hold some fuel pressure when turned off..... The pressure dumps right off when pump is turned off.... Also pump is always loud like it never primes... Just running wide open at all times.....I've tried pinching off the return line and pressure jumps up as its supposed to and pump quiets some but just doesnt seem right..... Any ideas? Thanx.....P.S. I've got the regulator set to 55 psi and when I pinch off the return pressure jumps to 90.