Fuel and Emission Control Parts

FUEL AND EMISSION CONTROL PARTS

REMOVAL AND INSTALLATION

Removal Steps 1-14:

INSPECTION

EGR VALVE




1. Check EGR valve for sticking or carbon deposits. If such conditions exist, clean or replace EGR valve.
2. Connect a hand vacuum pump to the nipple of EGR valve and plug other nipple.
3. Apply a vacuum of 500 mmHg (19.7 in. Hg) to make sure that a vacuum is maintained. If there is a leak, replace the EGR valve. In addition, check the valve for its opening and closing by applying and removing a vacuum.

INJECTORS




1. Using an ohmmeter (circuit tester), test for continuity between terminals of injector; the circuit should be closed. If failure is detected, replace the injector.

Standard value:
13-16 ohms [at 20 °C (68 °F)] (Non-turbo)
2-3 ohms [at 20 °C (68 °F)] (Turbo)

INSTALLATION SERVICE POINTS

A INJECTOR INSTALLATION




1. Before installing an injector the rubber O-ring must be lubricated with a drop of clean engine oil to aid in installation.
2. Install the injectors from the top end into the fuel rail. Be careful not to damage the O-ring during installation.

B FUEL PRESSURE REGULATOR INSTALLATION
1. Before installing the pressure regulator the O-ring must be lubricated with a drop of clean engine oil to aid in installation.