Vehicle emission control system Land Rover Discovery 1
Description of the Emission Reduction System
The system for reducing emissions of harmful substances into the atmosphere consists of three subsystems: Crankcase ventilation Fuel vapor recovery Mixture composition control
The system for reducing emissions of harmful substances into the atmosphere consists of three subsystems: Crankcase ventilation Fuel vapor recovery Mixture composition control
Crankcase ventilation system (3.9 MFi engine)
The crankcase ventilation system is closed, with crankcase gases being discharged to the engine intake. Blocked, disconnected, or damaged ventilation tubes and filters can impair proper mixture...
The crankcase ventilation system is closed, with crankcase gases being discharged to the engine intake. Blocked, disconnected, or damaged ventilation tubes and filters can impair proper mixture...
Mixture composition control
To ensure effective neutralization of toxic exhaust components, the vehicle is equipped with a catalytic converter. The neutralizer only works within a fairly narrow range of mixture compositions...
To ensure effective neutralization of toxic exhaust components, the vehicle is equipped with a catalytic converter. The neutralizer only works within a fairly narrow range of mixture compositions...
Fuel vapor recovery system
The system is designed to prevent fuel hydrocarbons from entering the atmosphere. The main element of the system is a fuel vapor accumulator filled with activated carbon. Between the fuel vapor...
The system is designed to prevent fuel hydrocarbons from entering the atmosphere. The main element of the system is a fuel vapor accumulator filled with activated carbon. Between the fuel vapor...
Identification of the vapor recovery system
Since October 1996, the system for US-supplied vehicles has been labeled EVAP. A system identification plate is riveted to the engine compartment bulkhead. With the letter A - a new system...
Since October 1996, the system for US-supplied vehicles has been labeled EVAP. A system identification plate is riveted to the engine compartment bulkhead. With the letter A - a new system...
Vapor Recovery System Leak Test
The old system Required equipment compressed nitrogen cylinder (do not use air!) pressure gauge 0 - 900 mm H₂ O hoses and tee Examination 1. Make sure there is at least 8 liters of fuel in the tank....
The old system Required equipment compressed nitrogen cylinder (do not use air!) pressure gauge 0 - 900 mm H₂ O hoses and tee Examination 1. Make sure there is at least 8 liters of fuel in the tank....
Running tests
1. Turn on the ignition for 30 seconds. 2. Engine temperature must be less than 30°C. 3. Run the engine at idle speed for 2 minutes. 4. Perform two slow accelerations from a standstill to 50 km/h...
1. Turn on the ignition for 30 seconds. 2. Engine temperature must be less than 30°C. 3. Run the engine at idle speed for 2 minutes. 4. Perform two slow accelerations from a standstill to 50 km/h...
Emission Control System Component Replacement — Crankcase Ventilation Filter
The filter is installed at the rear of the left valve cover. Removal 1. Push the filter cap up and release it from the latches. 2. Remove the sponge filter element. Installation 3. Install a new...
The filter is installed at the rear of the left valve cover. Removal 1. Push the filter cap up and release it from the latches. 2. Remove the sponge filter element. Installation 3. Install a new...
Oil separator
Removal 1. Loosen the clamp and remove the hose from the separator. 2. Unscrew the separator from the valve cover. 3. Remove the large sealing ring and check its condition. 4. Assess the condition of...
Removal 1. Loosen the clamp and remove the hose from the separator. 2. Unscrew the separator from the valve cover. 3. Remove the large sealing ring and check its condition. 4. Assess the condition of...
Oxygen sensor
Removal Caution: The sensor should only be removed when the exhaust system is cold. 1. Disconnect the battery. 2. Disconnect the connectors of both sensors. 3. Remove both sensors. Installation 4....
Removal Caution: The sensor should only be removed when the exhaust system is cold. 1. Disconnect the battery. 2. Disconnect the connectors of both sensors. 3. Remove both sensors. Installation 4....
Fuel vapor canister valve
Removal 1. Disconnect the battery. 2. Disconnect the valve connector. 3. Disconnect the hose from the valve. 4. Remove the valve. 5. Remove the sealing ring from the valve. 6. Discard the sealing...
Removal 1. Disconnect the battery. 2. Disconnect the valve connector. 3. Disconnect the hose from the valve. 4. Remove the valve. 5. Remove the sealing ring from the valve. 6. Discard the sealing...
Fuel vapor accumulator
1. Disconnect the battery. 2. Remove the fuel vapor canister valve. 3. Disconnect the steam supply hose. 4. Loosen the clamp bolt. 5. Remove the fuel vapor canister. 6. Installation in reverse order.
1. Disconnect the battery. 2. Remove the fuel vapor canister valve. 3. Disconnect the steam supply hose. 4. Loosen the clamp bolt. 5. Remove the fuel vapor canister. 6. Installation in reverse order.
Oxygen sensor (4.0 V8 engine)
Removal Both sensors 1. Raise the front of the vehicle and place it on stands. 2. Release the sensor wires from the clips on the right front sensor only. 3. Unscrew the ignition coil clamp fastening...
Removal Both sensors 1. Raise the front of the vehicle and place it on stands. 2. Release the sensor wires from the clips on the right front sensor only. 3. Unscrew the ignition coil clamp fastening...
Catalytic converter (downpipe)
Attention: carry out work only when the exhaust system is cold! 1. Disconnect the battery. 2. Raise the car on a lift. 3. Remove the oxygen sensors. 4. Unscrew the anti-roll bar fasteners. 5. Unscrew...
Attention: carry out work only when the exhaust system is cold! 1. Disconnect the battery. 2. Raise the car on a lift. 3. Remove the oxygen sensors. 4. Unscrew the anti-roll bar fasteners. 5. Unscrew...
Fuel vapor canister (4.0 V8 engine)
1. Disconnect the battery. 2. Disconnect the fuel vapor canister purge valve connector. 3. Remove the valve from the rubber support. 4. Remove the hose. 5. Loosen the vapor battery clamp bolt. 6....
1. Disconnect the battery. 2. Disconnect the fuel vapor canister purge valve connector. 3. Remove the valve from the rubber support. 4. Remove the hose. 5. Loosen the vapor battery clamp bolt. 6....
Fuel vapor collector (new system)
1. Disconnect the battery. 2. Disconnect the ventilation valve hose. 3. Disconnect the ventilation and cleaning line fittings. 4. Unscrew the bolt and nut securing the vapor accumulator to the...
1. Disconnect the battery. 2. Disconnect the ventilation valve hose. 3. Disconnect the ventilation and cleaning line fittings. 4. Unscrew the bolt and nut securing the vapor accumulator to the...
Fuel vapor canister valve (new system)
1. Disconnect the battery. 2. Disconnect the valve connector. 3. Remove the valve from the rubber support. 4. Disconnect the hose fittings from the vapor accumulator and the resonance chamber. 5....
1. Disconnect the battery. 2. Disconnect the valve connector. 3. Remove the valve from the rubber support. 4. Disconnect the hose fittings from the vapor accumulator and the resonance chamber. 5....
Ventilation valve (new system)
1. Disconnect the battery. 2. Disconnect the ventilation hose. 3. Disconnect the valve connector. 4. Remove the valve from the bracket. 5. Installation in reverse order.
1. Disconnect the battery. 2. Disconnect the ventilation hose. 3. Disconnect the valve connector. 4. Remove the valve from the bracket. 5. Installation in reverse order.
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections from Land Rover repair manuals:
• Power unit: Emission reduction TD6 Land Rover Range Rover 3 (2001-2012)
• Power unit: Emission reduction TD6 Land Rover Range Rover 3 (2001-2012)