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Home >> Mini >> 2004 >> Cooper S (R53) L4-1.6L SC (W11) >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Compression Check >> Testing and Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Compression Check: Testing and Inspection


Checking Compression Of All Cylinders
Special tools required:
^ 11 0 224
^ 11 8 490

Note: Read out fault memory of EMS2000 control module, check stored fault memory, rectify faults, clear fault memory. Turn off ignition.

Caution: High tension - mortal danger. Interrupt power supply to ignition coils.





Disconnect harness connector from coil pack.

Move lock slide (1).

Disconnect connector (2).





Remove all spark plugs.

Screw special tool 11 8 490 into spark plug thread and connect special tool 11 0 224.

Check adaptor tool seal is in perfect condition.





Depress accelerator pedal fully and actuate starter until compression stops rising.

Compression pressure.

Note: Disconnect the coil pack and cranking the engine will induce a fault code. Clear stored faults.

Note: Read out fault memory of EMS2000 control module, check stored fault memory, rectify faults, clear fault memory.