My 2004 S-Class had a vibration at idle, and today I’m replacing the spark plugs and wires to fix that! It’ll idle much more smoothly when I’m done. While I’m in there, I’ll also replace the intake air filters.

Parts:
Spark plugs: https://www.fcpeuro.com/products/mercedes-spark-plugs-set-of-16-fr8dpp33x16
Spark plug wires: https://www.fcpeuro.com/products/mercedes-ignition-wire-set-bbt-zk0440

Tools (affiliate links):
Spark plug wire wrench: https://amzn.to/45qCODs
Magnetic spark plug socket: https://amzn.to/441ljXT
Dielectric grease: https://amzn.to/4nazZgn
Flex head ratchet: https://amzn.to/4jQ6vBu

Shortcuts:
0:00 – Intro
0:28 – Engine cover removal
1:34 – Unplugging the coil packs
2:07 – Removing coil packs and matching wires
7:21 – Spark plug replacement
10:32 – Spark plug torque
10:47 – Reinstalling coils and wires
12:10 – Driver’s side
13:12 – Matching plug wire lengths
14:47 – Driver side spark plugs
16:24 – Driver side coils install
17:09 – Air filter replacement
18:25 – Engine cover reinstall
19:12 – Spark plug socket
19:33 – Starting the engine!
19:51 – Final thoughts

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Hochgeladen am 16.06.2025   Problem melden   Dieses Video bei YouTube   Frenchineer bei Youtube