WarningObserve the safety and cleanliness recommendations
Tooling
Equipment: compression tester (type MULLER 203 102-100)
| tool | Reference | designation |
|---|---|---|
| [0194-G] | dummy spark plug |
Preliminary operations
Ensure that the speed of engine rotation, driven by the starter, is correct (minimal value: 250 rpm)
Check the engine oil level
Check the condition of the air filter
Removing
WarningRespect the safety and cleanliness recommendations that are specific to high pressure diesel injection (HDi) engines
NoteChecking is carried out with the engine cold
Remove
- The battery style cover
- The engine cover
Disconnect the battery
Remove the air filter assembly
Measuring the pressures at the end of compression
Remove the glow plugs (cylinder by cylinder)
Fit the tool [0194-G]to cylinder N° 1; tighten to 1 daN.m
Connect the compressiometer to the tool [0194-G]
Disconnect: the camshaft position sensor
Reconnect the battery
Operate the starter for 10 seconds
Note down the value of the pressure in cylinder N° 1
Apply the same method for cylinders no.2, no.3 and no.4; using tool [0194-G] and the compression tester
NoteThe maximum discrepancy between 2 cylinders should be 5 bars
WarningIf the pressure values are low, check the condition of the air filter and the head gasket before planning an engine overhaul
Refitting
WarningAdhere to the tightening torques
Disconnect the battery
Remove
- The compression gauge
- The tool [0194-G]
Connect: the camshaft position sensor
WarningEnsure that the glow plugs are in good condition; replace any defective parts
Refit
- The pre-heater plugs
- The air filter assembly
- The engine cover
- The battery style cover
WarningPerform the operations to be carried out following reconnection of the battery
Reconnect the battery
Clear the faults in the memory; using the diagnostic equipment