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Home › Jaguar › 2013 › XK Base, 2D Convertible › Repair and Diagnosis › External Pages › Different car › Section 21 (Engine System - General Information) › Engine System - General Information › Diagnosis And Testing › Engine › Compression Test › Check the Compression Pressure

Check the Compression Pressure

WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Move gear selector lever to 'P' position. Failure to follow this instruction may result in personal injury.
  1. Remove the fuel pump relay.
  2. Start the engine - the engine will start, run for a few seconds then stall.
  3. Remove the spark plugs.
  4. Install the compression tester.
  5. Install an auxiliary starter switch in the starting circuit. With the ignition switch OFF, using the auxiliary starter switch, crank the engine a minimum of five compression strokes and record the highest reading. Note the approximate number of compression strokes required to obtain the highest reading.
  6. Repeat the test on each cylinder, cranking the engine approximately the same number of compression strokes.
  7. Install the removed components in reverse order, observing the specified tightening torques.
  8. Clear all DTCs from the ECM.
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