Mitsubishi Lancer Evolution 7. Manual — part 239

ENGINE AND EMISSION CONTROL -

Emission Control System

17-17

EGR VALVE

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation

Air Hose E Removal and Installation

(Refer to GROUP 15 - Inter Cooler.)

1

2

3

21 ± 4 N·m

Removal steps

1. Vacuum hose connection

2. EGR valve

3. EGR valve gasket

ENGINE AND EMISSION CONTROL -

Emission Control System

17-18

CANISTER

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation
D

Air Pipe C, Air Hose D Removal and Installation (Refer to GROUP 15 - Inter Cooler.)

D

Battery and Battery Tray Removal and Installation

D

Air Cleaner Assembly Removal and Installation (Refer to GROUP 15 - Air Cleaner.)

1

2

3

4

5

6

7

8

9

Canister removal steps

1. Purge hose

2. Check valve

3. Vapor hose

4. Vent connector

5. Vapor hose

6. Hose clamp

7. Canister

8. Fuel high pressure hose

9. Canister bracket assembly

ENGINE AND EMISSION CONTROL -

Emission Control System

17-19

CATALYTIC CONVERTER

GENERAL INFORMATION

The three-way catalytic converter, together with

the closed loop air-fuel ratio control based on the

oxygen sensor signal, oxidizes carbon monoxides

(CO) and hydrocarbons (HC) and reduces nitrogen

oxides (NOx).

When the mixture is controlled at stoichiometric

air-fuel ratio, the three-way catalytic converter

provides the highest purification against the three

constituents, namely, CO, HC and NOx.

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation
D

Under Cover Removal and Installation (Refer to GROUP 51 - Front Bumper.)

D

Crossmember Bar Removal and Installation (Refer to GROUP 32 - Engine Roll Stopper, Centermember.)

1

2

3

49 ± 10 N·m

13 ± 2 N·m

13 ± 2 N·m

59 ± 10 N·m

50 ± 5 N·m

Removal steps

1. Spring

2. Front exhaust pipe

3. Catalytic converter

NOTES