PRESSURE REGULATOR INSPECTION [G6]

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Simulation Test

1.  Carry out the “Fuel Line Pressure Inspection”. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [G6].)

•  If not as specified, perform the inspection for the pressure regulator.

Operation Inspection

Note

•  Perform the following test only when directed.

1.  Complete the “BEFORE REPAIR PROCEDURE”. (See BEFORE REPAIR PROCEDURE [G6].)

2.  Disconnect the negative battery cable.

3.  Connect a fuel pressure gauge between the pulsation damper and fuel main hose.

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4.  Connect the negative battery cable.

5.  Start the engine and let it idle.

6.  Measure the fuel line pressure after approx. 2 min.

7.  Disconnect the vacuum hose from the pressure regulator and measure the fuel line pressure.

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8.  Turn the ignition switch off.

9.  Complete the “BEFORE REPAIR PROCEDURE”. (See BEFORE REPAIR PROCEDURE [G6].)

10.  Disconnect the negative battery cable.

11.  Disconnect the fuel pressure gauge.

12.  Reconnect the fuel main hose to the fuel distributor.

13.  Reconnect the negative battery cable.

•  If not as specified, inspect the following:

―  Fuel pump maximum pressure

―  Fuel pump hold pressure

―  Fuel filter for clogging

―  Fuel injector for leakage

―  Fuel pump relay

―  Fuel line for improper routing, clogging, kinks or leakage

•  If all items above are okay, replace the pressure regulator. (See FUEL INJECTOR REMOVAL/INSTALLATION [G6].)

14.  Complete the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [G6].)