When to replace the Spark Plug on your CITROËN C4
Recommended replacement interval for the part category Spark plug : 60000 km
Important!
This replacement procedure can be used for:
CITROËN C4 II (B7) 1.6 VTi 120, CITROËN C4 II (B7) 1.4 VTi 95, CITROËN C4 II (B7) 1.6 THP 155, CITROËN C4 II (B7) 1.6 VTi 120 LPG View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Tools
Replacement: spark plugs – CITROËN C4 II (B7). Tools you might need:
Electronic spray
High-temperature anti-seize lubricant
Torque wrench
Drive socket # 8
Spark plug socket # 14
Ratchet wrench
Fender cover
Replacement: spark plugs – CITROËN C4 II (B7). AUTODOC recommends:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – CITROËN C4 II (B7). Take the following steps:
  1. Step 1
    Open the hood.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
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    Unscrew the engine cover fastener. Use a drive socket #8. Use a ratchet wrench.
  2. Step 4
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    Remove the engine cover.
    AUTODOC recommends:
    Do not apply excessive force when removing the part. Otherwise you may damage it.
  3. Step 5
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    Unplug the connectors from the ignition coils.
  4. Step 6
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    Take out the ignition coil from the spark plug well.
    Replacement: spark plugs – CITROËN C4 II (B7). Tip from AUTODOC:
    Remember the sequence of steps for ignition coil demounting.
  5. Step 7
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    Clean dirt, dust and debris from inside the spark plug wells.
  6. Step 8
    How to replace Spark Plug on CITROËN C4 II (B7) 2014: download PDF manuals and video instructions
    Unscrew the spark plugs. Use the spark plug socket #14.
  7. Step 9
    How hard is it to do yourself: Spark Plug replacement on Citroën C4 mk2 1.6 BlueHDi 120 2015 - download illustrated guide
    Take out the spark plugs.
  8. Step 10
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    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  9. Step 11
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    Install the new spark plugs into their mounting seats.
  10. Step 12
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    Screw new spark plugs and tighten them. Use the spark plug socket #14. Use a torque wrench. Tighten it to 25 nm torque.
    AUTODOC recommends:
    Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.
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DIY CITROËN C4 II (B7) Spark Plug replacement - online guide
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