How to carry out replacement: Spark Plug 250 GD 2.5 Mercedes W461
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Change Mercedes W461 250 GD 2.5 Spark Plug yourself – manuals and video tutorials

How to change spark plugs on MERCEDES-BENZ G-Class Off-Road (W461) – replacement guide

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Download your free tutorial and fix MERCEDES-BENZ G-Class Off-Road (W461) G 300 CDI (461.333) problems yourself Download for free 1.09 MB Spark Plug for Mercedes W461 Shop now
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When to replace the Spark Plug on your MERCEDES-BENZ G-CLASS
Recommended replacement interval for the part category Spark plug : 2 year / 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ G-Class Off-Road (W461) 230 GE (461), MERCEDES-BENZ G-Class Off-Road (W461) 230 GE (461.238, 461.239) … 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

All the parts you need to replace – Spark Plug for G-Class Off-Road (W461) and other MERCEDES-BENZ models
How to change Spark plug on Mercedes W461 250 GD 2.5 – step-by-step instructions for straightforward car repair Spark plug
How to change Spark plug on G-Class Off-Road (W461) – tips for proper car maintenance
Spark plug for G-Class Off-Road (W461) Petrol (125 hp)
Simple DIY car repair steps – Replacing Spark plug on G-Class Off-Road (W461)
Spark plug for G-Class Off-Road (W461) Petrol (122 hp)
Tools
Replacement: spark plugs – MERCEDES-BENZ G-CLASS (W461). Tools you'll need:
Wire brush
High-temperature anti-seize lubricant
Dielectric grease
Torque wrench
Combination spanner #10
Drive socket # 10
Spark plug socket # 16
Ratchet wrench
Phillips screwdriver
Crow bar
Fender cover
Buy tools
Replacement: spark plugs – MERCEDES-BENZ G-CLASS (W461). Professionals recommend:
  • The replacement procedure is the same for all spark plugs.
  • Warning! Shut down the engine before starting any work – MERCEDES-BENZ G-CLASS (W461).
Carry out replacement in the following order:
  1. Step 1
    Open the bonnet.
    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 Mercedes W461 1989 - free PDF and video manuals
    Disconnect the earth cable terminal from the battery. Use a combination spanner #10.
  2. Step 4
    How to replace MERCEDES-BENZ G-Class Off-Road (W461) 250 GD 2.5 1990 Spark Plug - step-by-step manuals and video guides
    Unscrew the inlet pipe fasteners. Use a Phillips screwdriver. Use a drive socket #10. Use a ratchet wrench.
  3. Step 5
    Mercedes W461 290 GD/G 290 D 2.9 (461.337, 461.338) 1991 Spark Plug replacement: free workshop manuals
    Remove the fastening bolts.
  4. Step 6
    Changing Spark Plug on MERCEDES-BENZ G-Class Off-Road (W461) 230 GE 2.3 1992 by yourself
    Remove the inlet pipe.
  5. Step 7
    How to remove MERCEDES-BENZ G-CLASS 230 G 2.3 (461.238, 461.239) 1993 Spark Plug - online easy-to-follow instructions
    Disconnect the spark plug wires from the spark plugs.
  6. Step 8
    How to replace Spark Plug on MERCEDES-BENZ G-Class Off-Road (W461) 1994: download PDF manuals and video instructions
    Clean dirt, dust and debris from inside the spark plug wells.
  7. Step 9
    How hard is it to do yourself: Spark Plug replacement on Mercedes W461 G 280 CDI (461.304, 461.334, 461.339, 461.344, 461.390) 1995 - download illustrated guide
    Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
  8. Step 10
    Need to know how to renew Spark Plug on MERCEDES-BENZ G-CLASS 1996? This free workshop manual will help you to do it yourself
    Take out the spark plugs.
  9. Step 11
    Changing of Spark Plug on Mercedes W461 1997 won't be an issue if you follow this illustrated step-by-step guide
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  10. Step 12
    MERCEDES-BENZ G-CLASS 250 GD 2.5 Spark Plug replacement: online guides and video tutorials
    Install the new spark plugs into their mounting seats.
  11. Step 13
    Replacing Spark Plug on Mercedes W461 1999 250 GD 2.5 by yourself
    Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 22 nm torque.
    Replacement: spark plugs – MERCEDES-BENZ G-CLASS (W461). 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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