How to carry out replacement: Spark Plug 2.4 Audi A6 C5 Saloon
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Change Audi A6 C5 Saloon 2.5 TDI Spark Plug yourself – manuals and video tutorials

How to change spark plugs on AUDI A6 Saloon (4B2, C5) – replacement guide

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When to replace the Spark Plug on your AUDI A6
Recommended replacement interval for the part category Spark plug : 6 year / 60000 km
Important!
This replacement procedure can be used for:
AUDI A6 Saloon (4B2, C5) 1.8, AUDI A6 Saloon (4B2, C5) 1.8 T, AUDI A6 Saloon (4B2, C5) 1.8 T quattro, AUDI A6 Saloon (4B2, C5) 1.8, AUDI A6 Saloon (4B2, C5) 1.8 T quattro, AUDI A6 Saloon (4B2, C5) 1.8 T … 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

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Tools
Replacement: spark plugs – AUDI A6 (4B2, C5). Tools you need:
Torque wrench
Spark plug socket # 16
High-temperature anti-seize lubricant
Fender cover
Buy tools
Replacement: spark plugs – AUDI A6 (4B2, C5). AUTODOC experts recommend:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – AUDI A6 (4B2, C5). 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
    How to change Spark Plug on Audi A6 C5 Saloon 1997 - free PDF and video manuals
    Release the throttle cable from its fasteners on the engine cover.
  2. Step 4
    How to replace AUDI A6 Saloon (4B2, C5) 2.4 1998 Spark Plug - step-by-step manuals and video guides
    Remove the spark plug wire connectors from the spark plug wells.
    Replacement: spark plugs – AUDI A6 (4B2, C5). Tip from AUTODOC:
    Be careful to avoid damaging spark plug wires.Remember the sequence of the spark plug wires connectors.
  3. Step 5
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    Clean dirt, dust and debris from inside the spark plug wells.
  4. Step 6
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    Unscrew the spark plugs. Use the spark plug socket #16.
    Please note!
    To insert the spark plug wrench into the spark plug well of the cylinder #3, unplug the connector on the engine intake manifold.
  5. Step 7
    How to remove AUDI A6 2.5 TDI quattro 2001 Spark Plug - online easy-to-follow instructions
    Take out the spark plugs.
  6. Step 8
    How to replace Spark Plug on AUDI A6 Saloon (4B2, C5) 2002: download PDF manuals and video instructions
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  7. Step 9
    How hard is it to do yourself: Spark Plug replacement on Audi A6 C5 Saloon 2.4 2003 - download illustrated guide
    Install the new spark plugs into their mounting seats.
  8. Step 10
    Need to know how to renew Spark Plug on AUDI A6 2004? This free workshop manual will help you to do it yourself
    Screw new spark plugs and tighten them. Use a torque wrench. Use the spark plug socket #16. Tighten it to 25 nm torque.
    Replacement: spark plugs – AUDI A6 (4B2, C5). Professionals recommend:
    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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