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International Automotive Technicians Network
Re: Dropping Fuel Pressure
Posted to Technical Discussion Forum on 8/2/2023

That fitting on the fuel rail sounds like an overpressure relief valve. Its job is to open if the HP pump goes berserk and rail pressure goes too high. The relief valve dumps from the rail back into the LP supply.

I'm wondering if there's crap in the fuel ta... Login to read more.