When to replace the Spark Plug on your MERCEDES-BENZ C-CLASS
Recommended replacement interval for the part category Spark plug : 18 month / 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W202) C 180 (202.018), MERCEDES-BENZ C-Class Saloon (W202) C 200 (202.020), MERCEDES-BENZ C-Class Saloon (W202) C 180 (202.018), MERCEDES-BENZ C-Class Saloon (W202) C 230 (202.023) View more

The steps may slightly vary depending on the car design.

How to change spark plug on MERCEDES W202 [TUTORIAL AUTODOC]

video
Tools
Replacement: spark plugs – Mercedes W202. List of the tools you'll need:
High-temperature anti-seize lubricant
Spark plug socket # 16
HEX bit no.H5.
Ratchet wrench
Torque wrench
Flat Screwdriver
Fender cover
Replacement: spark plugs – Mercedes W202. Tip from AUTODOC:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – Mercedes W202. Recommended sequence of steps:
  1. Step 1
    How to change Spark Plug on W202 1993 - free PDF and video manuals
    Open the hood.
  2. Step 2
    How to replace MERCEDES-BENZ C-Class Saloon (W202) C 180 1.8 (202.018) 1994 Spark Plug - step-by-step manuals and video guides
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
  3. Step 3
    W202 C 250 2.5 Turbo Diesel (202.128) 1995 Spark Plug replacement: free workshop manuals
    Detach the air intake hose clamp. Use a flat screwdriver.
  4. Step 4
    Changing Spark Plug on MERCEDES-BENZ C-Class Saloon (W202) C 220 CDI 2.2 (202.133) 1996 by yourself
    Unplug the mass air flow sensor connector.
  5. Step 5
    How to remove MERCEDES-BENZ C-CLASS C 200 2.0 (202.020) 1997 Spark Plug - online easy-to-follow instructions
    Disconnect the air intake pipe from the air filter housing.
  6. Step 6
    How to replace Spark Plug on MERCEDES-BENZ C-Class Saloon (W202) 1998: download PDF manuals and video instructions
    Unscrew the clamp that fastens the air filter hose to the throttle body. Use a flat screwdriver.
  7. Step 7
    How hard is it to do yourself: Spark Plug replacement on W202 C 250 D 2.5 (202.125) 1999 - download illustrated guide
    Detach the vacuum pipe. Use a flat screwdriver.
  8. Step 8
    Need to know how to renew Spark Plug on MERCEDES-BENZ C-CLASS 2000? This free workshop manual will help you to do it yourself
    Dismantle the air filter pipe.
  9. Step 9
    Changing of Spark Plug on W202 1993 won't be an issue if you follow this illustrated step-by-step guide
    Unscrew the engine cover fastener. Use HEX No.H5. Use a ratchet wrench.
  10. Step 10
    MERCEDES-BENZ C-CLASS C 220 2.2 (202.022) Spark Plug replacement: online guides and video tutorials
    Remove the engine cover. Use a flat screwdriver.
    AUTODOC recommends:
    Replacement: spark plugs – Mercedes W202. To avoid damaging the part when removing it, do not use excessive force.
  11. Step 11
    Replacing Spark Plug on W202 1995 C 180 1.8 (202.018) by yourself
    Remove the spark plug wire connectors from the spark plug wells.
    Replacement: spark plugs – Mercedes W202. Professionals recommend:
    Be careful to avoid damaging spark plug wires.Remember the sequence of the spark plug wires connectors.
  12. Step 12
    Clean dirt, dust and debris from inside the spark plug wells.
    Step 13
    C-Class Saloon (W202) C 200 2.0 (202.020) 1996 Spark Plug DIY replacement workshop manual
    Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
  13. Step 14
    How to change Spark Plug on MERCEDES-BENZ C-Class Saloon (W202) 1997 - tips and tricks
    Take out the spark plugs. Use the spark plug socket #16.
  14. Step 15
    Step-by-step recommendations for DIY replacement W202 1998 C 200 2.0 (202.020) Spark Plug
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  15. Step 16
    DIY replacement of Spark Plug on MERCEDES-BENZ C-Class Saloon (W202) C 220 D 2.2 (202.121) 1999 is not an issue anymore with our step-by-step tutorial
    Install the new spark plugs into their mounting seats. Use the spark plug socket #16.
  16. Step 17
    How to change Spark Plug on W202 1993 - free PDF and video manuals
    Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 27 nm torque.
    Replacement: spark plugs – Mercedes W202. AUTODOC experts 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.
Was this manual helpful?
Please rate this manual on a scale from 1 to 5. If you have any questions, feel free to ask us.
Users voted – 0
Searching for the right tyres?

Find out which tyre and wheel sizes are compatible with the MERCEDES-BENZ C-Class Saloon (W202) model.

Your profile is your personal assistant.

It can track car expenses, keep a car log and replacement schedule, and save favourite materials, notes and documents

Install the AUTODOC CLUB app!
Your personal car expenses manager, maintenance tips, reminders about upcoming appointments and service intervals, DIY repair instructions – all this on your phone.
MERCEDES-BENZ C-Class Saloon (W202) Spark Plug replace by yourself - Scan QR-code and download AUTODOC CLUB app
Scan

To download the app:

  • - scan the QR code
  • - download from App Store
  • - download from Google Play
DIY MERCEDES-BENZ C-Class Saloon (W202) Spark Plug replacement - online guide
Tips & tricks for your MERCEDES-BENZ C-Class Saloon (W202)
View more
  • How to change Engine spark plug on MERCEDES-BENZ C-Class Saloon (W202) C 220 D 2.2 (202.121) - replacement tricks
    Causes of a worn car boot damper | AUTODOC
  • Changing Spark plug W202 C 180 1.8 (202.018) - Replacement Tips
    What causes engine misfire? | AUTODOC
  • Maintenance Hacks - MERCEDES-BENZ C-Class Saloon (W202) C 250 2.5 Turbo Diesel (202.128) Engine spark plugs replacement guide
    How to paint a brake caliper | AUTODOC tips
  • Replace Spark plug set on W202 - free video tips
    4 reasons why your CHECK ENGINE light is on | AUTODOC tips