Ford 4.6 Fuel Filter

X3 - All the later injected stuff has one form or another of positive retention on all the fuel connections due to higher line pressure( 45psi or so). Ford is probably one of the easier ones to do yourself. The new direct injected systems are around 2200psi on the high side of the system. You should normally have pressure at the test port, but worn or leaking injectors can bleed off while sitting. Mike
 
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