Renault Clio: High pressure pump leak flow: Check

K9K, and 764 or 772

• Disconnect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).

• Disconnect the inlet pressure sensor (1).
• Remove:
  • the air duct (2) between the air filter and the intercooler,
  • the air duct (3) between the intercooler and the turbocharger.

• Unclip the diesel anti-splash shield.
• Remove:
  • the mounting bolt of the injector rail protector cover,
  • the rail protector cover.
• Disconnect the fuel return pipe from the high-pressure pump.
• Place the correct blanking plug on the connector of the high-pressure pump fuel return pipe.
• Connect the offset union with a diameter of 8 mm with its hose and contained in the (Mot. 1771) to the high pressure pump fuel return union.
• Insert this pipe into the graduated measuring cylinder.
• Refit the air duct between the air filter unit and the intercooler.
• Loosen the mounting nut of the pipe at the intercooler inlet on the alternator.
• Fit the air duct between the turbocharger and the intercooler air inlet pipe.
• Lock the air duct onto the turbocharger and the intercooler inlet air pipe.
• Tighten the bolt of the air duct on the rocker cover.
• Torque tighten the nut mounting the intercooler air inlet pipe on the alternator (8 Nm).
• Connect:
  • the inlet pressure sensor,
  • the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Follow the procedures described in the fault finding repair manual (see MR 394 Fault finding, 13B, Diesel injection, Fault finding - Tests) :
  • TEST 2: Check internal fuel transfer pump (ITP)

IMPORTANT

Do not leave any object (tools or other) on the side of the engine housing during the entire operation.

Position the tools so that they do not fall during the " engine running " phase of the test.

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