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Home >> Porsche >> 2008 >> Cayenne Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 10 - Engine - Crankcase, Suspension >> WM 101902 Performing Compression Pressure Check On DFI Engines (Cayenne Tip, Cayenne Man, Cayenne Diesel, Cayenne S TRANSSYBERIA Tip, Cayenne TRANSSYBERIA Man, Cayenne GTS Tip "PORSCHE Design Edition 3") >> Preliminary Work

Preliminary Work

  1. Open the bonnet.
  2. Open lid of central electrics box. To do this, loosen the 4 fastening screws. -arrows- 
    Fig 1: Locating Central Electrics Box
    G09408899Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    WARNING: Live components 
    • Risk of electric shock 

    → Remove electric charge from component.

    → Make sure it does not switch on again.

    → Check that there is no electric charge

    → Cover adjacent live parts.

    NOTE: Unburnt injected fuel gets into the exhaust system
    • Risk of damage to components that affect the exhaust system

    → Prevent the fuel from injecting by removing the fuse.

    Information 

    Remove the fuse for the ignition rod modules. Disconnect electric connections for the ignition rod modules.

  3. Pull out the fuses for the ignition rod modules and the injection system .
  4. Remove spark plugs. → Removing Spark Plugs
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