EGR Valve: Testing and Inspection

EGR VALVE INSPECTION
1. DISCONNECT ENGINE WIRE AND HEATER WATER VALVE FROM COWL PANEL





(a) Remove the 2 nuts, and disconnect the engine wire protector and ground strap.
(b) Remove the 2 bolts, and disconnect the heater water valve.
(c) Pull out the engine wire protector and heater water hose from the cowl panel.





2. REMOVE EGR PIPE
(a) Loosen the union nut of the EGR pipe.
(b) Remove the 2 bolts, EGR pipe and gasket.

3. REMOVE EGR GAS TEMPERATURE SENSOR





4. REMOVE EGR VALVE
(a) Disconnect these hoses:
(1) Vacuum hose from EGR valve
(2) Pressure hose from EGR valve
(b) Remove the 2 nuts, EGR valve and gasket.





5. INSPECT EGR VALVE
Check for sticking and heavy carbon deposits. If a problem is found, replace the EGR valve.

6. REINSTALL EGR VALVE
(a) Place a new gasket on the intake air connector.
(b) Install the EGR valve with the 2 nuts.

Torque: 21 N.m (210 kgf.cm, 15 ft.lbf)

(c) Connect these hoses:
- Vacuum hose to EGR valve
- Pressure hose to EGR valve

7. REINSTALL EGR GAS TEMPERATURE SENSOR

Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)

8. REINSTALL EGR PIPE
(a) Temporarily install the union nut of the EGR pipe.
(b) Install a new gasket and the EGR pipe with the 2 bolts.

Torque: 27 N.m (280 kgf.cm, 20 ft.lbf)

(c) Tighten the union nut of the EGR pipe.

Torque: 64 N.m (650 kgf.cm, 47 ft.lbf)

9. REINSTALL ENGINE WIRE AND HEATER WATER VALVE TO COWL PANEL
(a) Install the heater water valve with the 2 bolts.
(b) Install the engine wire protector and ground strap with the 2 nuts.