Noise Identification

Lewis Benson

Lewis Benson

Member
 Derbyshire
Hi all. I was hoping you may be able to identify a couple of noises for me and tell me whether they are normal or not.
It happens when I turn the engine off and sounds like a vacuum possibly.

I'd appreciate it if you could watch this video. The noise at 9secs is me closing the door. Can you identify the noise at 11secs and at 16secs please?

Many thanks in advance.
 
M54 engine?
Disa valve dumping the vacuum.
If you look in the back of it, as the noise happens you’ll see the piston move back across.
 
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