ENGINES
209
CHECKING THE ENGINE COMPRESSION RATES
Engines: 9HX - 9HY - 9HZ
Tools.
[1] Compression meter : MULLER 203102-100
[2] Dummy sparking plug : (-).0194.G
Removing.
IMPERATIVE: Respect the safety and cleanliness requirements specific to High pressure
Diesel injection (HDi) engine versions.
Remove the engine cover and the battery.
Disconnect the negative terminal of the battery.
Remove:
- The air filter assembly (see corresponding operation).
- The preheater plugs (see corresponding operation).
Checks.
Fit the tool [2] on cylinder N°1, tighten to 1 m.daN.
Connect tool [1] on tool [2].
Reconnect the positive and negative terminals of the battery.
Action the starter for 10 seconds (engine ECU disconnected).
The value for the pressure in the cylinder should be 20 ± 5 bars (for a new engine).
B1CPOF5D