Renault Clio: Exhaust fuel injector: Removal - Refitting

Renault Clio III (2005-2013) Service Manual / Engine And Peripherals / Exhaust / Exhaust fuel injector: Removal - Refitting

K9K, and 772

IMPORTANT

To avoid all risk of damage to the systems, apply the safety and cleanliness instructions and operation recommendations before carrying out any repair:

• see Exhaust: Precautions for repair (19B, Exhaust),
• see Vehicle: Precautions for repair (01D, Mechanical introduction).

IMPORTANT

Wear protective gloves during the operation.

IMPORTANT

Wear heat protective gloves during the operation.

PARTS AND CONSUMABLES FOR THE REPAIR WORK

• Parts always to be replaced:
  • the diesel injector seal on its cooler.
• Consumables:
  • cleaning cloths (part no. 77 11 211 707).

REMOVAL

I - REMOVAL PREPARATION OPERATION

• Position the vehicle on a two-post lift (see Vehicle: Towing and lifting) (MR 392, 02, Lifting equipment).
• Connect Diagnostic tool to the vehicle.
• Run command AC238 "Fuel pump relay" in order to lower the fuel pressure in the exhaust fuel injector supply system.

Note: Repeat this operation 4 times in order to discharge the residual pressure as much as possible.

• Disconnect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Remove:
  • the engine cover,
  • the engine undertray
  • the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery),
  • the battery tray (see Battery tray: Removal - Refitting) (MR 392, 80A, Battery).

II - OPERATION FOR REMOVAL OF PART CONCERNED

• From underneath the engine compartment, disconnect from the diesel injector on the catalytic pre-converter:
  • the diesel supply pipe union (1),
  • the electrical connector (2).

Note: Be careful not to damage the connector.

Note: Prepare for diesel outflow (pressurised circuit).

• Remove:
  • the retaining bracket bolt (3) from the diesel injector on the catalytic pre-converter using a ratchet fitted with an extension and a T45 male torx socket,
  • the diesel injector retaining bracket (4) on the catalytic pre-converter,
  • the diesel injector (5) with its seal.

Note: To remove and refit the injector, lift the vehicle and operate from underneath.

• Discard the diesel injector cooler seal.

REFITTING

I - CLEANING THE DIESEL INJECTOR

• Immerse the injector in a container of diesel.
• Wipe using new cleaning cloths (part no. 77 11 211 707).

WARNING

It is strictly forbidden to clean the injectors with:

• a wire brush,
• an emery cloth,
• an ultrasonic cleaner.

II - REFITTING OPERATION FOR PART CONCERNED

• Always replace the diesel injector seal on its cooler.
• Fit the diesel injector fitted with its new seal and its retaining bracket on the cooler.

WARNING

Before tightening the bracket, check that the injector is correctly positioned in relation to the bracket.

Note: Before tightening the bracket bolt, ensure that the injector is positioned properly in relation to its bracket: flat surfaces to guide the bracket on the injector ensure this correct position.

If the injector is incorrectly positioned, the entire particle filter will not work properly as the diesel fuel jet will not be correctly oriented.

• Torque tighten the mounting bolt of the diesel injector retaining bracket (21 N.m).
• Connect to the diesel injector:
  • the diesel supply pipe union,
  • the electrical connector.

III - FINAL OPERATION

• Refit:
  • the battery tray (see Battery tray: Removal - Refitting) (MR 392, 80A, Battery),
  • the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery),
• Connect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Connect the Diagnostic tool to the vehicle.
• Run command AC 237 : fuel pump relay.
• Wait for the command to end, then lift the vehicle and check that there are no leaks on the injector circuit: deal with any leaks.
• Refit:
  • the engine cover,
  • the engine undertray.

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