Air box rattle

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Twistedmind

Active Member
Joined
May 30, 2013
Messages
594
Location
Staffordshire
Car
Mercedes C350e
Hi all.

Just noticed my car sounding like a bag of bolts. Lifted up the bonnet and the air box is rattling around.

All the clips are on and it seems solid enough in place ?

But when the engine is on, it moves like a rat on a hot plate

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I take it you mean the air filter housing - are there a couple of screws inside, under the filter, connecting it to the engine or a bracket?

Item 71 here... Êàòàëîã MERCEDES
on my ML 270cdi (2 of them)
 
Hi all.

Just noticed my car sounding like a bag of bolts. Lifted up the bonnet and the air box is rattling around.

All the clips are on and it seems solid enough in place ?

But when the engine is on, it moves like a rat on a hot plate

Sent from my iPhone using MBClub UK

Have you thought about having a look to see why it is loose?
 
Does not seem loose. All the bolts and clips are tight. It just seems to vibrate a lot unless the engine is vibrating to much

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It's usually the air feed to the box, I put a screw through them to hold them together.
 
Ok. Thanks. Will have a look at that the weekend. Also get a good engine shudder when I turn the engine off

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On my 220CDI (basically the same engine with a cylinder sawn off), the rear of the airbox is held on with two pegs into holes on the mounting bracket. These holes should have rubber grommets in to prevent rattles: mine were missing.
 
Troon. Will keep that one in mind.

Taking it apart on Saturday. Will let you know

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Think I found the problem. Nut missing. See photo. Anybody got one knocking around ?

The rubber bungs look fine and tight

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