Fuel system SFi of car Land Rover Discovery 1

SFI Fuel System Description
Location of injection system components (old fuel vapor recovery system) 1 - engine control unit, 2 - ignition coils, 3 - fuel pressure regulator, 4 - air flow sensor, 5 - relay unit (main relay and...

Engine adjustments
Idling The position of the idle speed control valve is checked using the TEST BOOK diagnostic tester; adjustments are made by turning the bypass channel screw on the resonance chamber. The adjustment...

Accelerator cable
Note: The operation of the automatic transmission depends on the accuracy of the cable adjustment. 1. Move the throttle lever to the fully closed position. 2. Turn the knurled nut to remove any slack...

Repair — camshaft position sensor
1. Disconnect the battery. 2. Raise the car on a lift. 3. Release the sensor connector from the clip on the front cover. 4. Disconnect the sensor connector. 5. Unscrew the sensor mounting bolt. 6....

Coolant temperature sensor
Removal 1. Disconnect the battery. 2. Disconnect the sensor connector. 3. Place a rag around the sensor to collect the liquid. 4. Unscrew the sensor. 5. Discard the sealing washer. Installation 6....

Crankshaft position sensor
1. Disconnect the battery. 2. Raise the car on a lift. 3. Unscrew the two bolts securing the sensor and protection. 4. Remove the sensor and protection. 5. Disconnect the sensor connector and remove...

Relieving pressure in the fuel system
Please note: There will always be some pressure remaining in the system, even if the engine has not been running for some time. Before removing any fuel system component, relieve residual fuel...

Engine control unit
1. Disconnect the battery. 2. Release the washer reservoir fasteners and move it to the side. 3. Unscrew the two nuts securing the control unit cover. 4. Remove the cover. 5. Disconnect the three...

Air flow sensor
Removal 1. Disconnect the battery. 2. Disconnect the intake manifold air hose from the sensor. 3. Disconnect the sensor connector. 4. Unfasten the two clips securing the sensor to the air filter 5....

Fuel manifold and injectors
Removal 1. Disconnect the battery. 2. Relieve residual fuel pressure. 3. Remove the resonance chamber, see below. 4. Disconnect the fuel vapor canister hose, crankcase ventilation hose, brake booster...

Fuel temperature sensor
Note: There is no need to relieve residual fuel pressure when removing the sensor. 1. Disconnect the battery. 2. Disconnect the sensor connector. 3. Unscrew the sensor. 4. Installation is carried out...

Ignition coils
Removal 1. Disconnect the battery. 2. Disconnect the high-voltage wires from the coils and mark the connection points. 3. Place the wires aside. 4. Disconnect the coil connector. 5. Unscrew the 4...

Air temperature sensor
1. Disconnect the sensor connector. 2. Remove the sensor from the air filter. 3. Install the sensor in place, tightening torque 8 Nm.

Throttle position sensor
1. Disconnect the sensor connector. 2. Unscrew the two sensor mounting bolts. 3. Remove the sensor and mounting plate. 4. Clean the sensor installation area. 5. Install the sensor in place, making...

Knock sensor
Caution: Do not apply sealant or locking adhesive to the sensor threads - this will reduce the sensitivity of the sensor. 1. Raise the car. 2. Right sensor only: Remove the starter heat shield...

Fuel pressure regulator
1. Disconnect the battery. 2. Relieve residual fuel pressure. 3. After releasing the pressure, tighten the supply hose fastening nut. 4. Disconnect the return heat line from the pressure regulator....

Resonance chamber
Removal 1. Disconnect the battery. 2. Loosen the air hose clamp and remove the hose from the resonance chamber. 3. Remove the cotter pin from the accelerator cable eye. 4. Remove the earring finger....

Relay box (old fuel vapor control system)
1. Remove the relay box from the bracket. 2. Disconnect the two wiring connectors. 3. Replace the block.

Relay Block (New Evaporative Emission Control System)
1. Remove the relay box from the bracket. 2. Disconnect the two wiring connectors. 3. Replace the block.

Fuel filter (new fuel vapor recovery system)
Attention: Observe fire safety precautions. 1. Relieve residual fuel pressure. 2. Raise the rear of the vehicle and support it on stands. 3. Clean the connection points of the fuel lines to the...

Fuel pump and fuel level sensor (new fuel vapor management system)
The fuel pump and level sensor are installed in the fuel tank; a pressure sensor is installed on the upper flange of the pump, which cannot be removed from the pump. Access to the pump is through a...

Fuel tank (new fuel vapor recovery system)
1-10. Remove the fuel pump and fuel level sensor, see above . 11. Raise the rear of the vehicle and support it on stands. 12. Mark the position of the stabilizer bar mountings. 13. Rotate the...

Draining fuel from the fuel tank (new fuel vapor recovery system)
Attention: 1. Before removing the fuel tank, drain the fuel from it. Fire hazard! Prepare and place fire extinguishing equipment near the work area. 2. Before disconnecting the fuel system...

Fuel tank filler neck (new fuel vapor recovery system)
1. Relieve residual pressure in the fuel system. 2. Disconnect the battery. 3. Check the amount of fuel in the tank: if it is full, drain at least 22 liters of fuel. 4. Unscrew the six screws of the...

Relief valve (new fuel vapor recovery system)
Removal 1. Remove the fuel tank filler neck. 2. Remove the fuel separator hose fastening clip and disconnect the hose. 3. Loosen the lock screw in the valve nut face by two turns. 4. Completely...

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Discovery 3

Discovery 1