Is attached to the fuel injection supply manifold (9F792)
downstream of the fuel injectors (9F593)
.
Regulates the fuel pressure supplied
to the fuel injectors
.
Is a diaphragm-operated relief valve
in which one side of the diaphragm senses fuel pressure and the other side is
subjected to intake manifold vacuum.
Nominal fuel pressure is established by a spring preload applied to the
diaphragm.
Balances one side of the diaphragm with manifold pressure to maintain a
constant fuel pressure drop across the fuel injectors
.
Bypasses and returns excess fuel to
the fuel tank (9002)
.
