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Author Subject: 4k problem
lee_gti6

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Location: Kent

Registered: 29 Jan 2005

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Post #1
The 6 is charged (low boost) car run's fine and doesn't seem to have any problems at all starting or running until you get to 4,000 and then you can here the engine over the exhaust.


to be the sounds like metal vibrating but can't seem to find anything that is lose, i haven't changed or done any work on the car recently so can't think what it could be.


Does anyone have any ideas?

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Posted 30th Jul 2012 at 21:01
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BlackSix

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Location: northampton

Registered: 30 Jul 2012

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Post #2
im not expert, but as the engine tilts could something be making contact with the bonnet?
Posted 30th Jul 2012 at 21:06
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lee_gti6

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Post #3
Have group N engine mounts so the engine shouldn't move that much.

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Posted 30th Jul 2012 at 21:09
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BlackSix

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Post #4
hmm...thinking about it ive had this on a previous car actually....

in that case it was bearings in an idler pulley. silent until a certain point in the revs then sounded like all hell broke loose when you went past it. might be worth checking for roughness or play on the pulleys on the alternator belt
Posted 30th Jul 2012 at 21:20
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lee_gti6

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Post #5
When i have some more time on my hands i'll have a proper look and hopefully it won't be too much of a problem. Shall let you know if i find anything.

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Posted 1st Aug 2012 at 21:49
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eliotrw

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Location: Southwark

Registered: 18 Jul 2010

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Post #6
My money is on the headsheild that attaches to the engine by the cam cover for the exhaust cam and goes just above the exhaust manifold being either loose or having a snapped bolt missing.

To calify im not on about the bulk head one. its actually bolted to the engine

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Posted 1st Aug 2012 at 21:55
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lee_gti6

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Location: Kent

Registered: 29 Jan 2005

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Post #7
eliotrw wrote:
My money is on the headsheild that attaches to the engine by the cam cover for the exhaust cam and goes just above the exhaust manifold being either loose or having a snapped bolt missing.

To calify im not on about the bulk head one. its actually bolted to the engine


The small metal one yeh??? if so did have a wiggle of this the other day and it didn't seem to move.

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Posted 1st Aug 2012 at 21:58
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lee_gti6

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Registered: 29 Jan 2005

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Post #8
It's looking like it is the Baffles in the exhaust.

But untill i get round to changing in it, i won't know 100%

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Posted 13th Aug 2012 at 12:09
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #9
lee_gti6 wrote:
It's looking like it is the Baffles in the exhaust.

But untill i get round to changing in it, i won't know 100%


Yes, these are quite a common problem Lee, it will be the baffles in the centre box which will have become dislodged due to running the decat and the extra flow that is going through the box. Yes

Same thing happened to mine. Then I put the straight through centre section on and it blew the baffles out of the backbox instead due to increased flow. Yes

So now I have no more baffles and no more rattles. LOL

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 13th Aug 2012 at 12:26
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eliotrw

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Post #10
..... And its louder than a Space shuttle take off*

*this is a fact Razz

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Ex- Phase 3 China GTi-6 T-Reg
Posted 13th Aug 2012 at 12:49
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #11
LOL

It is now officially. Yes
When it still had its baffles in it was 131dB, heaven knows what it would be now! Laugh

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 13th Aug 2012 at 13:11
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