So I turn key on one eng can hear fuel pump fire off have 42 psi fuel pressure turn key on other eng fuel pump sounds real faint but I have 42 psi but just win pump shuts off I hear fuel leaking from some where put engine under load it pops and fuel pressure was down to 30 let idle runs at 42 psi anyone have any fuel leak problems can't find leak and also pump doesn't keep running need help