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Mercedes W123 Diesel Fuel Filter, Secondary Replacement

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Mercedes W123 Diesel Fuel Filter, Secondary Replacement: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
  • Prime the system using the primer pump until the fuel pressure release valve opens. You'll be able to tell by the squeaking noise from the injection pump.

  • Now is also a good time to replace the clear plastic primary fuel filter. If you'd like to do this, and need guidance, see the primary fuel filter replacement guide.

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