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Well I changed fuel pumps, and now use a external regulator (Aeromotive 1000-6). Still bleeds down fuel pressure right after shutdown. Drops to 10, then hangs out there for ahwile. I bypassed my fuel rail and injectors (putting feed from pump straight into regulator), still happens (can eliminate loose fittings and/or leaky injectors). Had a friend close the return line near the tank with a pair of pliers, still drops. That eliminates the regulator.

There is no smell of gas, so I'm lead to believe I'm loosing the pressure in the tank somehow. Anyone ever discover a problem with the stock fuel pump hangar assembly? Cracks or something? Because I can't find a darn thing wrong.
 
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