How to replace the air filter on Mitsubishi Lancer EX 2.0

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  • OVERALL DIFFICULTY INDEX: 2/10
  • NO TOOLS REQUIRED FOR THIS JOB
  • IF YOU HAVE NO EXPERIENCE YOU SPEND 10 MINUTES TO CARRY OUT THIS JOB
  • RISK OF BURNS, SEE BELOW​
BEFORE YOU START
  • Be careful not to touch any hot part of the engine.​
DISCLAIMER:
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
NOTE: this tutorial is valid for the following Mitsubishi, Peugeot and Citroën models, all equipped with the same Mitsubishi 4B11 engine:
  • Mitsubishi Lancer
  • Mitsubishi ASX (depending on model-year)
  • Mitsubishi Outlander
  • Mitsubishi Outlander Sport (depending on model-year)
  • Peugeot 4007, 4008
  • Citroën C-Crosser, C4 Aircross

When and why to replace the air filter - Symptoms of a clogged air filter element

The frequency at which you should change your air filter is as follows:
  • In a normal environment, replace your air filter every 20,000 Km
  • In a dusty environment, replace your air filter every   10,000 Km
Not replacing the air filter element leads to the following engine deterioration / symptoms:
  • Carbon build-up inside the combustion chamber
  • Excessive fuel consumption
  • Possible black smoke seen from exhaust
  • Excessive oil build-up in air intake hoses

How to replace the air filter on the Mitsubishi Lancer 2.0 EX

The air filter of the Mitsubishi Lancer is located beside the engine, to the right side, in a dedicated housing.
With your fingers, unclip the steel springs that hold the air filter box together and take off the air filter cartridge of the Mitsubishi Lancer.
This one was found extremely clogged as it was not replaced for much more than the recommended frequency:
For refitting a new cartridge element, simply insert the air filter inside its housing and press on the steel springs to reclip them; that's it!

Removing the air filter housing on the Mitsubishi Lancer EX 2.0

If you intend to remove the complete housing for some mechanical intervention underneath or having more access to what you intend to do, proceed as follows:
  • unscrew the unique bolt that holds the air filter housing to the chassis,
  • unclip and remove the air intake tube
  • disconnect the air outlet tube that connects to the throttle

See also our other tutorials on Japanese cars and all cars...

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