Taurus L4-153 2.5L HSC (1986)
Fuel Pressure: Testing and Inspection
NOTE: The fuel pressure regulator is factory adjusted. Do not attempt to reset fuel pressure by adjusting it.
PRESSURE CHECK
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Disconnect electrical connection to inertia switch on left side of luggage compartment.
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Crank engine for 15 seconds to reduce system pressure.
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Install fuel pressure gauge between fuel filter and injectors.
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Connect inertia switch in luggage compartment.
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Start engine and check fuel system pressure. Then accelerate engine while monitoring pressure.
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Fuel pressure should remain within specification. See: Specifications
PRESSURE CHECK GAUGE REMOVAL
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Disconnect electrical connection to inertia switch.
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Crank engine 15 seconds (to reduce fuel pressure).
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Remove pressure gauge and restore fuel lines to their original condition.
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Connect inertia switch.
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Crank engine and check for leaks.