Sucking Air

[TIG64]

I have a Mercedes c220 diesel estate, 2004, and when it is running it seems to be sucking a lot of air, I have changed the air filter and can't see any breaks or cracks in the air filter box, any suggestions as to what may be causing this?

 

[Mickybo]

how do you know it is sucking a lot of air?

 

[Twistedmind]

Are you sure the are box lid is secured correctly and all clips are present ?

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