Renault Clio: Pressure at end of compression: Check

Renault Clio III (2005-2013) Service Manual / Engine And Peripherals / Top And Front Of Engine / Pressure at end of compression: Check

K9K

• Remove the heater plugs (see 13C, Preheating, Heater plugs: Removal - Refitting, 13C-2).

• Disconnect:
  • the pressure regulation solenoid valve connector (1),
  • the flow control solenoid valve connector (2),
• Fit the hose end piece (Mot. 1592) in place of one of the removed plugs.

• Moderately tighten the hose end piece (Mot. 1592) using an open-jawed spanner.

• Moderately tighten the diesel compression gauge on the hose end piece (Mot. 1592).
• Connect a self-contained starter or an automatic battery charger.
• Vehicle which is equipped with RENAULT Card:
  • run command SC003 Save computer data,
  • run command RZ019 Reinitialise programming,
  • run the starter for at least 15 seconds until the compression gauge needle stabilises to obtain the maximum value,
  • open the discharge valve to release all of the pressure in the compression gauge,
  • proceed through the diagram sheet,
  • carry out the same procedure for the other cylinders,
  • run command SC001 Write computer data.
• For vehicles equipped with keys, follow the starting cycle until the compression gauge needle stabilises to obtain the maximum value:
  • open the discharge valve to release all of the pressure in the compression gauge,
  • proceed through the diagram sheet,
  • carry out the same procedure for the other cylinders

Note: The pressure value after compression must be at least 18 bar.

• Disconnect the self-contained starter or automatic battery charger.
• Loosen:
  • the diesel compression gauge on the hose end piece (Mot. 1592),
  • the hose end piece (Mot. 1592) using an open-jawed spanner.
• Remove the hose end piece (Mot. 1592) which was fitted in place of one of the removed plugs.
• Connect:
  • the connector to the pressure regulation solenoid valve,
  • the flow control solenoid valve connector,
• Refit the heater plugs (see 13C, Preheating, Heater plugs: Removal - Refitting, 13C-2).
• Using the Diagnostic tool, check for the absence of stored faults in the computers; deal with any faults and clear them if necessary.

D4F

CHECK

I - PREPARATION OPERATION FOR CHECK

• Remove the plugs (see 17A, Ignition, Plugs: Removal - Refitting, 17A-11).

Note: Use a petrol compression gauge compatible with the special tools.

The petrol compression gauge must be equipped with a universal end piece (rubber), or a gaz 1/4 thread bolt.

• Connect a petrol compression gauge (1).
• Run command with Diagnostic tool :
  • RZ009: VEHICLE FUNCTION PROGRAMMING,
  • VP036: FUEL SUPPLY INHIBITION.
• Put the vehicle under the starting conditions by positioning the gear lever in neutral.

II - TEST OPERATION

• Activate the starter until the needle of the petrol compression gauge stabilises.
• Measure the cylinder compressions, cylinder by cylinder.
• Fully depress the accelerator pedal in order to open the throttle valve during the compression measurements.

Note: It is necessary to wait for at least 10 seconds before starting the engine each time (the starter will not run due to its thermal protection).

III - FINAL OPERATION

• Disconnect the petrol compression gauge.
• Refit the plugs (see 17A, Ignition, Plugs: Removal - Refitting, 17A-11).
• Run command VP037: "STOP INHIBIT FUEL SUPPLY" using the Diagnostic tool.
• Start the engine.

Note: If the engine does not start, run command VP037: STOP FUEL SUPPLY INHIBITION using the Diagnostic tool or switch off the ignition and wait 1 min before starting the engine again.

K4M

CHECK

I - PREPARATION OPERATION FOR CHECK

• Remove:
  • the coils (see 17A, Ignition, Coils: Removal - Refitting, 17A-2),
  • the spark plugs (see 17A, Ignition, Plugs: Removal - Refitting, 17A-11).

• Connect a petrol compression gauge (1).
• Put the vehicle under starting conditions:
  • gear lever in neutral position for manual gearbox,
  • gear lever in position P (park) for an automatic gearbox.
• Disconnect the injector connectors.

II - TEST OPERATION

• Activate the starter until the needle of the petrol compression gauge stabilises.
• Measure the compression of the engine, cylinder by cylinder.
• Fully depress the accelerator pedal in order to open the throttle valve during the compression measurements.

Note: It is necessary to wait for at least 10 seconds before starting the engine each time (the starter will not run due to its thermal protection).

III - FINAL OPERATION

• Disconnect the petrol compression gauge.
• Refit:
  • the spark plugs (see 17A, Ignition, Plugs: Removal - Refitting, 17A-11),
  • the coils (see 17A, Ignition, Coils: Removal - Refitting, 17A-2).
• Connect the injector connectors.
• Using the Diagnostic tool, check that there are no faults stored in the computer.
• Start the vehicle.

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