Renault Laguna III, Manual

Page: 382 / 3699

11A
-
4
TOP AND FRONT OF ENGINE
Pressure at end of compression: Check
F4R
11A
CHECK
I - PREPARATION OPERATION FOR CHECK
a
Remove:
- the engine cover,
- 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 for manual gearbox or position
P ("Park") for automatic gearbox.
- brake pedal depressed.
II - TEST OPERATION
a
Press the vehicle start button to trigger the engine
starting phase.
a
Measure the cylinder compressions, cylinder by cyl-
inder.
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 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.
Equipment required
petrol compression gauge
Diagnostic tool
124911
Note:
The engine will be driven by the starter for 20
seconds , without being started.
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).
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.