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Discussion Starter · #1 · (Edited)
There's a strange noise coming out front the middle top of my engine, it only makes the sound when i step on the gas pedal. it's like grrr sound,

Does anybody know why it make's this kind of sound.

my car is 323i manual transmission, i only hear the sound when it's neutral and on the first gear,

here's the sound of my normal rev up:

here's the strange sound while i rev up:

the strange sound doesn't come out all time,
even it doesn't come out all the time, i don't like the sound of it.
well, whenever i hear different sound coming from my car i don't like it
and i always feel uneasy

please help with this strange sound i have while i step on the gas
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