HELP!! Really bad noise coming from engine :-/

[GaryStewart07]

So my clutch and flywheel were replaced just over 2 weeks ago.

Now the engine is making a really bad vibrating noise like a hammer drill but only when you rev between 1200>1400 RPM after that the noise vanishes.

I can hear most with my head in the footwell but when outside the car its really faint.

Any ideas on this please?

It's a 2.0L FSI Sport

 

[Av4nt]

did audi do it or another garage? Id ring them and tell them to re inspect it

 

[GaryStewart07]

did audi do it or another garage? Id ring them and tell them to re inspect it

It was done by a mechanic friend and the dual mass clutch/flywheel was from Europarts.

 

[warren_S5]

Sounds like the work that's been done needs reinspecting

 

[GaryStewart07]

Sounds like the work that's been done needs reinspecting

I'm wondering if its possibly an engine mount as it sounds fine idling at 900rpm but only between 1200>1400 RPM its making that horrendous noise and then disappears all the way up to max RPM

 

[warren_S5]

Could be, but unlikely. I take it none of the heat shields have been disturbed during rebuild?

Dual mass flywheels spring adapt at around 2000rpm (Frequently Asked Questions | Honest John)

Does the noise happen when static (eg revving), or on the move (or both)

 

[GaryStewart07]

Could be, but unlikely. I take it none of the heat shields have been disturbed during rebuild?

Dual mass flywheels spring adapt at around 2000rpm (Frequently Asked Questions | Honest John)

Does the noise happen when static (eg revving), or on the move (or both)

It's doing it in both situations as I heard it pulling away from traffic lights at first. Stopped to see and it does it out of gear with the same frequency at 1200>1400 RPM

There has however been a rattle noise (very much like a heat shield) since day1 thats happens at the same intervals. It could be this thats worsened somehow, but a garage said that the heat shield is fine and a breather manifold needs changed.

 

[John ler]

Sounds daft but sit on your engine while someone reeves it to see if it still makes the sound

 

[warren_S5]

Sounds daft but sit on your engine while someone reeves it to see if it still makes the sound

If you do don't wear any clothing with loose / hanging fabric that could get caught in belts / fan motor. Better to get two people to press down on it if you can.

 

[Boon]

There could be a small cover on the back of the engine on the flywheel casing at about 2 o'clock if viewed from nearside/passenger front wheel that covers an inspection hole for the flywheel

I say could as I'm not familiar with the engine but it happened on mine when changed the clutch & flywheel, the small cover plate must have been slightly bent going back on and it was catching when engine was hot...

You'll need the under tray off to gain access underneath