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HOMESERVICE MANUALSJAGUAR2018XE BASE, 2.0L ENG VIN N, AWDREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALENGINE SYSTEM - GENERAL INFORMATION -- XE (X760)ENGINE SYSTEM - GENERAL INFORMATIONDIAGNOSIS AND TESTINGSYMPTOM CHART
2018 Jaguar XE Base, 2.0L Eng VIN N, AWD

Symptom Chart

2018 Jaguar XE Base, 2.0L Eng VIN N, AWDSECTION Symptom Chart
NOTE:
  • If an engine is suspect, and the vehicle remains under the Manufacturers warranty refer to the Warranty Policy and Procedure manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new engine.
  • Due to the possibility of loose carbon, that has become trapped between the valve face and seat, effecting the pressure readings, when carrying out a compression test and some cylinders are found to have low pressures, install the spark plugs, road test the vehicle and re-test the suspect cylinders. If the correct pressures are restored, no further action is required.
SYMPTOM ACTION
All engine related issues
  • Using the Jaguar Land Rover approved diagnostic equipment, check the powertrain control module for related DTCs and refer to the relevant DTC index
Difficult to start hot and cold
  • Carry out general engine checks:
  • Perform the Inline diagnostic unit 2, relative compression test - V6 3.0L S/C Petrol
  • Compression test. Refer to component tests in this section.
  • Valve clearances
  • Spark plug condition and color
Poor idle
  • Ensure the air intake system is free from leaks
  • Carry out general engine checks:
    • Perform the Inline diagnostic unit 2, relative compression test - V6 3.0L S/C Petrol
    • Compression test. Refer to component tests in this section.
    • Valve clearances
    • Spark plug condition and color
  • Check for collapsed catalytic converter/blocked exhaust system
    • Check long and short term fuel trim datalogger signals Readings up to 10%: may be considered as acceptable if the readings are equal bank to bank
    • Positive readings of between 10-20%: check for air leaks in air intake system
    • Negative readings of between 10-20%: check for over fuelling e.g. leaking injectors, high fuel pressure
    • Readings above 20%: check for diagnostic trouble codes and refer to diagnostic trouble code index.
  • Carry out a vacuum gauge check. Refer to component tests in this section
Insufficient power/Insufficient compression
  • Ensure the air intake system is free from leaks
  • Carry out general engine checks:
    • Perform the Inline diagnostic unit 2, relative compression test - V6 3.0L S/C Petrol
    • Compression test. Refer to component tests in this section.
    • Valve clearances
    • Spark plug condition and color
  • Check for collapsed catalytic converter/blocked exhaust system
  • Check long and short term fuel trim datalogger signals
    • Readings up to 10%: may be considered as acceptable if the readings are equal bank to bank
    • Positive readings of between 10-20%: check for air leaks in air intake system
    • Negative readings of between 10-20%: check for over fuelling e.g. leaking injectors, high fuel pressure
    • Readings above 20%: check for diagnostic trouble codes and refer to diagnostic trouble code index.
  • Carry out a vacuum gauge check. Refer to component tests in this section
Oil consumption
  • Carry out oil leak check followed by an oil consumption test. Refer to the component tests in this section
  • If oil consumption is excessive:
  • Check the integrity of the engine breather system
  • Carry out general engine checks:
  • Perform the Inline diagnostic unit 2, relative compression test - V6 3.0L S/C Petrol
  • Compression test. Refer to component tests in this section.
  • Valve clearances
  • Spark plug condition and color
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.