Weird engine noise.

[vozduk]

Hello all,

I am new to this forum but am a member at ozaudi.com.

For the past few months I have had a problem with my car.
The car is a B7 2.0T Quattro, with a carbonio intake, stage 1 revo tune, revised pcv and a bsh diverter set up.
The symptoms I can describe is when I hit up to about 4000-5000rpm whether I am just revving or going through gear there is a weird noise that's like a wobbly sound. The car would run pretty average once that happens(rough idle) but it then goes away and would come back if done again.

My mechanic thinks it's a cracked engine mount but a few other people think there's no way the sound could be from a engine mount problem.

I have attached a video bellow, I'm sure people would be able to tell that there is something wrong.

[SteveA4B7]

You talking about that whining noise, when you leave the throttle and revs come down, right?

Do you still have the stock catalytic converter installed?

[vozduk]

Nah not the whining noise. Put the volume up and listen to 2-4 seconds, it sounds like the engine is over revving but it's no where near red line.

I have the stock cat.

[BenMTL]

Definitely not engine mount related...Have you boost leak tested your car? Sounds like air to me....

[vozduk]

It's less noticeable when I put it back to stock but it is still there. I havn't boost leak tested it, what is the best way to diagnose if it's actually a leak and from where it's coming from?

[BenMTL]

It's less noticeable when I put it back to stock but it is still there. I havn't boost leak tested it, what is the best way to diagnose if it's actually a leak and from where it's coming from?

Air pressure test...System should hold a certain amount of pressure IIRC...Don't know what the exact PSI is though.

As well, smoke or dye works good...