Chery Tiggo. Manual — part 224
Removal & Installation - 2.4L
WARNING!
Release fuel system pressure before servicing fuel system components. Service vehicles in well-ventilated areas
and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or death.
1. Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
2. Disconnect the negative battery cable.
3. Disconnect four fuel injector electrical connectors
(1).
4. Remove the fuel pressure regulator (See Fuel Pressure Regulator Removal & Installation in Section 04 Fuel
Delivery).
5. Remove the two fuel rail mounting bolts.
(Tighten: Fuel rail mounting bolts to 12 N·m)
6. Remove the fuel rail with the four fuel injectors.
7. Installation is in the reverse order of removal.
Installation Notes:
• Install new seals on the fuel injector sealing surfaces.
Fuel Injector
Description
The fuel injectors are positioned in the intake manifold with the nozzle ends directly above the intake valve port.
Operation
Injector operation is controlled by a ground path provided for each injector by the Engine Control Module (ECM).
Injector on-time (pulse-width) is variable, and is determined by the ECM. Based on the engine operating conditions,
the ECM will control injector pulse-width operation to obtain optimum performance.
Removal & Installation - 1.6L & 1.8L & 2.0L
WARNING!
Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas
and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or death.
1. Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
2. Disconnect the negative battery cable.
3. Remove the engine cover.
4. Remove the ground cable on the cylinder head.
ON-VEHICLE SERVICE
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5. Disconnect the electrical connectors (1) from the
fuel injectors.
6. Remove the fuel line (2) from the fuel rail.
7. Remove the two fuel rail (4) bracket bolts (3) that
mount the fuel rail to the intake manifold.
(Tighten: Fuel rail bracket bolts to 11 N·m)
8. Remove the fuel injectors (1) from the fuel rail.
9. Installation is in the reverse order of removal.
Installation Notes:
• Coat the surface of the O-ring seals with clean engine oil before installing the fuel injector. Be careful not to
damage the O-ring seals when inserting the fuel injector into the fuel distribution tube.
Removal & Installation - 2.4L
WARNING!
Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas
and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or death.
1. Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
2. Disconnect the negative battery cable.
3. Disconnect four fuel injector electrical connectors
(1).
ON-VEHICLE SERVICE
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BESM040005
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04
4. Remove the fuel pressure regulator (See Fuel Pressure Regulator Removal & Installation in Section 04 Fuel
Delivery).
5. Remove the two fuel rail mounting bolts.
(Tighten: Fuel rail mounting bolts to 12 N·m)
6. Remove the fuel rail with the four fuel injectors.
7. Remove the clamp holding the fuel injector to the fuel rail.
8. Remove the fuel injector from the fuel rail.
9. Installation is in the reverse order of removal.
Installation Notes:
• Install new seals on the fuel injector sealing surfaces.
Fuel Injector Inspection
1. Remove the fuel injector electrical connector.
2. Use a digital multimeter to measure the resistance between the two fuel injector pins (fuel injector side).
SPECIFICATION
TEMPERATURE
11 - 13
⍀
20°C
ON-VEHICLE SERVICE
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Fuel Pressure Regulator - With Mitsubishi 2.4L Engine
Description
The fuel pressure regulator is connected to the fuel rail. The fuel pressure regulator has a vacuum connection to it.
The fuel pressure regulator is used to regulate the fuel pressure in the fuel system.
NOTE :
The 2.4L is the ONLY engine that uses an external fuel pressure regulator.
Operation
The fuel pressure regulator is designed to keep the fuel pressure in the fuel system at a constant pressure. It does
this with a spring-loaded diaphragm that controls a valve. The valve, when opened by excessive pressure in the fuel
lines, uncovers a fuel line that returns excess fuel to the fuel tank. The vacuum connection is there to help reduce
emissions during deceleration. During deceleration, the vacuum connection serves to open the fuel return valve
wider, which reduces pressure in the system and prevents excess hydrocarbon emissions due to less fuel being
injected as a result of the lower pressure in the system.
Removal & Installation
WARNING!
Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas
and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or death.
1. Release the fuel system pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
2. Disconnect the negative battery cable.
ON-VEHICLE SERVICE
LTSM040007
04
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