WarningObserve the safety and cleanliness recommendations
Recommended tools
[1] compression tester MULLER 203102-100
[2] dummy spark plug (-).0188-U
Removing
WarningRespect the safety and cleanliness recommendations that are specific to high pressure diesel injection (HDi) engines
Disconnect the battery negative terminal
Drain the cooling system
Remove the windscreen wiper mechanism
Remove the windscreen wiper mechanism
Remove
- The coolant/exhaust gas heat exchanger and EGR electrovalve assembly
- The pre-heater plugs
Check
Fit the tool [2]to cylinder N° 1; tighten to 1 daN.m
NoteUse a mirror to connect the flexible pipe of the tool [2]on the dummy plug of the tool [2]
Connect the tool [1]to the tool [2]
Disconnect the engine ECU
Reconnect the battery negative terminal
Operate the starter for 10 seconds
The pressure value in the cylinder should be 20 ± 5 bars (for a new engine)
Remove
- Tool [1] from tool [2]
- Tool [2] from cylinder no. 1
Apply the same procedure for cylinders 2, 3 and 4
NoteThe difference between two cylinders should not be more than 5 bars
Disconnect the battery negative terminal
Reconnect the engine ECU
Refitting
WarningAt refitting, all the removed seals must be replaced with new seals
Refit
- The pre-heater plugs
- The coolant/exhaust gas heat exchanger and EGR electrovalve assembly
- The windscreen wiper mechanism
Fill and bleed the engine cooling circuit
Reconnect the battery negative terminal