Air filter change Citroen C4 Picasso 2007 - 2014 | Haynes Manuals
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Air filter location
You will need to release the engine cover
Undo the two retaining bolts on the brake fluid reservoir and move to one side - use a Torx-27 socket. This allows you to gain access to the air filter
Carefully relocate the brake fluid reservoir to gain access
Now undo the circular clip on the air intake - use a 7mm socket or a screwdriver
Undo the second circular clip on the air intake - use a 7mm socket or flat end screwdriver
Now release the air intake
Now unplug the MAF sensor
Undo the 3 x 4mm Allen key retaining bolts
Carefully lift away the air filter box
View of the air filter cover
Air filter in position
Lift out the air filter
Clean off any debris on the surface of the filter. Replace with a new filter if contaminated
Now reassemble the air filter housing and replace the air intake and brake fluid reservoir