Fuel Pressure Regulator

The standard Fuel Pressure Regulator is installed on the fuel rail on the 4/4 Zetec. FSE make a direct-replacement kit (VK-384-Z1-H) Power Boost Valve. This is a rising rate, adjustable regulator that increases pressure 1.7 times quicker than standard. The idea is that it accurately tracks manifold pressure, making the engine more responsive during acceleration. At other times, the ECU monitors the exhaust and adjusts the injecor pulse so overall fuel economy is maintained.

[ Sender ]
A sender unit replaces the original valve, on the fuel rail. The standard return coupling is blocked off and a high pressure braided hose runs to the valve unit. (the kit comes with non-braided hose). The vacuum line can be seen (blue). 		[ Valve ]
The valve itself has been mounted on the bulkhead, with the bracket supplied in the kit. The feed from the fuel rail and the vacuum line are connected. The third connection is the fuel return line. On the top of the unit is an adjuster, letting you set the fuel pressure as required.


This kit is widely available on the internet, compare prices and watch out for VAT.

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