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Fuel pressure regulator vacuum hose connections

ErikC

New member
I have a 2007 sea ray select, mercuiser 5.0L MPI fuel injected Engine. The fuel pressure regulator mounted on the fuel rail has a vacuum hose with a
tee, one hose goes to the intake manifold and the other somewhere to the rear of
the engine on the port side. The end of the hose has the rusted nipple to
whatever it was connected to.

Does anyone know where or what it connects to
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The tee and hoses are indicated by the red colored number 21


vacuum hoses.jpg
 
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