Renault Clio: Diesel supply circuit: Operating diagram
Renault Clio III (2005-2013) Service Manual / Engine And Peripherals / Fuel Supply / Diesel supply circuit: Operating diagramK9K, and 750 or 752 or 766 or 768
Operating diagram of the diesel fuel supply circuit
The circuit comprises:
- a sender (1),
- a priming bulb (2),
- a fuel filter (3) that can be fitted with a water detection sensor,
- a high pressure pump (4) with a built-in mechanical low pressure pump (transfer pump),
- a fuel flow actuator (5),
- an injector rail (6) fitted with a diesel pressure sensor (7),
- four injectors (8),
- a venturi tube (9),
- a bleed screw (10),
- various sensors,
- an injection computer.
IMPORTANT
Loosening a high-pressure pipe union when the engine is running is strictly prohibited.
WARNING
It is forbidden:
- to dismantle the interior of the pump or injectors.
Only the fuel flow actuator, the diesel fuel temperature sensor and the venturi tube can be replaced,
- to remove the pressure sensor from the fuel rail (because of circuit contamination problems). If the pressure sensor fails, the pressure sensor, the rail and the five high pressure pipes must be replaced.
Only the flow actuator, the diesel fuel temperature sensor and the venturi tube can be replaced.
K9K, and 764
Operating diagram of the diesel fuel supply circuit
The circuit comprises:
- a sender (1),
- a priming bulb (2),
- a fuel filter (3) which may be fitted with a water detection sensor,
- a high pressure pump (4) with a built-in mechanical low pressure pump (transfer pump),
- a pressure regulator (5), mounted on the high-pressure pump,
- a flow regulator (6), mounted on the high-pressure pump,
- an injector rail (7) fitted with a pressure sensor,
- a bleed screw (8),
- four injectors,
- various sensors,
- an injection computer.
IMPORTANT
Loosening a high pressure pipe union when the engine is running is strictly prohibited.
WARNING
It is forbidden:
- to dismantle the interior of the pump or injectors.
- to remove the pressure sensor from the fuel rail (because of circuit contamination problems). If the pressure sensor fails, the pressure sensor, the rail and the five high pressure pipes must be replaced,
- to dismantle the flow regulator solenoid and the pressure regulator solenoid on the high-pressure pump.
K9K, and 772
Operating diagram of the diesel fuel supply circuit
The circuit comprises:
- a pump - sender (1),
- a priming bulb (2),
- a fuel filter (3) that can be fitted with a water detection sensor,
- a high pressure pump (4) with a built-in mechanical low pressure pump (transfer pump),
- a pressure regulator (5) mounted on the high pressure pump,
- a flow regulator (6) mounted on the high pressure pump,
- an injector rail (7) fitted with a pressure sensor,
- a bleed screw (8),
- four injectors,
- various sensors,
- an injection computer,
- a particle filter injector fuel filter (9),
- a diesel injector (10) on the catalytic pre-converter,
- a diesel injector cooler (11),
- a catalytic pre-converter (12).
IMPORTANT
Loosening a high-pressure pipe union when the engine is running is strictly prohibited.
WARNING
It is forbidden:
- to dismantle the interior of the pump or injectors.
- to remove the pressure sensor from the fuel rail (because of circuit contamination problems). If the pressure sensor fails, the pressure sensor, the rail and the five high pressure pipes must be replaced,
- to dismantle the flow regulator solenoid valve and the pressure regulator solenoid valve on the high pressure pump.
READ NEXT:
Diesel filter: Removal - Refitting
K9K
REMOVAL
I - REMOVAL PREPARATION OPERATION
Remove:
the front right-hand wheel (see Wheel: Removal -
Refitting) (MR 392, 35A, Wheels and tyres),
the right-hand wheel arch liner (see Front wh
Injector rail - Injectors: Removal - Refitting
D4F, and 740 or 742 or 764
REMOVAL
I - REMOVAL PREPARATION OPERATION
Disconnect the battery (see Battery: Removal - Refitting).
Remove:
the air filter box (see 12A, Fuel mixture, Air filter unit:
Fuel pressure: Check
D4F
CHECK
IMPORTANT
During this operation, be sure to:
be careful of fuel splashes when disconnecting
the union.
IMPORTANT
Wear goggles with side protectors for this operation.
IMPORTANT
Wear lat
SEE MORE:
Emergency brake assist
This system supplements the ABS
and helps reduce vehicle stopping distances.
Operating principle
The system is for detecting an emergency
braking situation. In this case,
the braking assistance immediately develops
maximum power and may trigger
ABS regulation.
ABS braking is maintained as
Fuel temperature sensor: Removal - Refitting
K9K, and 750 or 752 or 766 or 768
IMPORTANT
Use the diagnostic tool before any operation is carried
out on the injection circuit to check:
that the injector rail is not under pressure,
that the fuel temperature is not too high.
It is essential to respect the safety and cleanliness
advice whenev
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