How to carry out replacement: Spark Plug 1.9 JTDM 16V (939AXC1B, 939AXC12) Alfa Romeo 159 939
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Change Alfa Romeo 159 939 1.8 MPI (939AXL1A) Spark Plug yourself – manuals and video tutorials

How to change spark plugs on ALFA ROMEO 159 Saloon (939) – replacement guide

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Download your free tutorial and fix ALFA ROMEO 159 (939) 1.9 JTDM 8V (939AXE1B, 939BXE1B, 939BXH1B) problems yourself Download for free 1.22 MB Spark Plug for Alfa Romeo 159 939 Shop now
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When to replace the Spark Plug on your ALFA ROMEO 159
Recommended replacement interval for the part category Spark plug : 8 year / 120000 km
Important!
This replacement procedure can be used for:
ALFA ROMEO 159 (939) 2.2 JTS (939AXB1B, 939AXB11), ALFA ROMEO 159 (939) 1.9 JTS (939AXA1B) … 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 159 (939) and other ALFA ROMEO models
Alternative products
How to change Spark plug on Alfa Romeo 159 939 1.9 JTDM 16V (939AXC1B, 939AXC12) – step-by-step instructions for straightforward car repair Spark plug
Tools
Replacement: spark plugs – ALFA ROMEO 159 (939). Tools you need:
Electronic spray
High-temperature anti-seize lubricant
Drive socket # 8
Drive socket # 10
Spark plug socket # 16
Ratchet wrench
Torque wrench
Flat Screwdriver
Fender cover
Buy tools
Replacement: spark plugs – ALFA ROMEO 159 (939). 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 – ALFA ROMEO 159 (939). Use the following procedure:
  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 Alfa Romeo 159 939 2005 - free PDF and video manuals
    Undo the engine cover screws (4 pieces). Use a drive socket #8. Use a ratchet wrench.
  2. Step 4
    How to replace ALFA ROMEO 159 (939) 1.9 JTDM 16V (939AXC1B, 939AXC12) 2006 Spark Plug - step-by-step manuals and video guides
    Remove the engine cover.
  3. Step 5
    Alfa Romeo 159 939 2.4 JTDM (939AXD12, 939AXD1B) 2007 Spark Plug replacement: free workshop manuals
    Detach the connector from the ignition coil. Use a flat screwdriver.
  4. Step 6
    Changing Spark Plug on ALFA ROMEO 159 (939) 2.2 JTS (939AXB1B, 939AXB11) 2008 by yourself
    Unscrew the ignition coil bracket. Use a drive socket #10. Use a ratchet wrench.
  5. Step 7
    How to remove ALFA ROMEO 159 2.4 JTDM (939AXD) 2009 Spark Plug - online easy-to-follow instructions
    Take out the ignition coil from the spark plug well.
  6. Step 8
    Clean dirt, dust and debris from inside the spark plug wells. Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
    Step 9
    How to replace Spark Plug on ALFA ROMEO 159 (939) 2010: download PDF manuals and video instructions
    Take out the spark plugs.
  7. Step 10
    How hard is it to do yourself: Spark Plug replacement on Alfa Romeo 159 939 1.9 JTS (939AXA1B) 2011 - download illustrated guide
    Install the new spark plugs into their mounting seats.
  8. Step 11
    Need to know how to renew Spark Plug on ALFA ROMEO 159 2012? This free workshop manual will help you to do it 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 – ALFA ROMEO 159 (939). 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.
  9. Step 12
    Changing of Spark Plug on Alfa Romeo 159 939 2005 won't be an issue if you follow this illustrated step-by-step guide
    Treat the mounting seats of the spark plugs on the ignition coil. Use high-temperature grease.
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