Top And Front Of Engine; Pressure At End Of Compression: Check - Renault Laguna III Manual

TOP AND FRONT OF ENGINE

Pressure at end of compression: Check

M4R
Equipment required
petrol compression gauge
Diagnostic tool
CHECK
I - PREPARATION OPERATION FOR CHECK
a Remove:
- the engine cover,
- the intake distributor (see 12A, Fuel mixture, Inlet
distributor: Removal - Refitting, page 12A-75) ,
- the ignition coils (see 17A, Ignition, Coils: Re-
moval - Refitting, page 17A-1) ,
- the spark plugs (see 17A, Ignition, Plugs: Re-
moval - Refitting, page 17A-10) .
a Connect a petrol compression gauge (1) .
a Run command with Diagnostic tool :
- RZ009: "VEHICLE FUNCTIONS PROGRAM-
MING",
- VP036: "INHIBIT FUEL SUPPLY".
a Put the vehicle under starting conditions:
- gear lever in neutral position for manual gearbox,
- brake pedal depressed.
II - TEST OPERATION
a Press the vehicle start button to trigger the engine
starting phase.
Note:
The engine will be driven by the starter for 20
seconds, without being started.
a Measure the cylinder compressions, cylinder by cyl-
inder.
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.
a Disconnect the petrol compression gauge.
a Refit:
- the spark plugs (see 17A, Ignition, Plugs: Re-
moval - Refitting, page 17A-10) ,
- the ignition coils (see 17A, Ignition, Coils: Re-
moval - Refitting, page 17A-1) ,
- the intake distributor (see 12A, Fuel mixture, Inlet
distributor: Removal - Refitting, page 12A-75) ,
- the engine cover.
a Run command VP037: "STOP INHIBIT FUEL SUP-
PLY" using the Diagnostic tool.
a Press the vehicle start button to start the engine.
Note:
If the engine does not start, run command
VP037: "STOP INHIBIT FUEL SUPPLY" using
the Diagnostic tool or switch off the ignition and
wait 1 minute and restart the engine.
123469
11A-1
11A