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Thread: C6 S6 Engine Rattle – Manifold?

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  1. C6 S6 Engine Rattle – Manifold? 
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    Hi all - new to the forum but looking for help.

    I've had a C6 S6 for 18 months now, I have a new job starting in a month which will need to do 20k miles a year. As such I committed the cardinal sin of thinking about selling my car which has resulted in it breaking.

    A couple of weeks back a high pitch sound came from the back of the engine, it misfired and i was down on power. I took it into Dialynx the specialist in Swindon and they found a hose which was more tape than hose! Replaced it for a hundred quid, this solved the misfire. However the high pitch noise remained. I booked it in for that to be looked at but they cant see it till the 8th of next month. They suggested the high pitch noise was air being pushed through a narrow gap but needed to investigate it in more depth.

    Now the high pitch noise has disappeared. But replaced with what sounds like a nail rattling round in the engine. Its OK at idle but gets worse with revs.

    It sounds horribly like a manifold issue to me.

    So - my questions:

    Anyone aware of any fix other than replacement if it is manifold?
    Anyone know of anywhere to get a manifold from?
    Is it safe to drive till the 8th? (Although i will call Dialynx anyway to see if they can get me in sooner!)
    Any other words of support!!!

    Cheers!
     
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  2. Re: C6 S6 Engine Rattle – Manifold? 
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    It could be the manifold gasket or manifold screws, a small leak in that leads to exhaust being pushed through that if there isn’t an airtight seal. I saw something like this on YouTube somewhere.
     
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  3. Re: C6 S6 Engine Rattle – Manifold? 
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    Quote Originally Posted by rayyan171 View Post
    It could be the manifold gasket or manifold screws, a small leak in that leads to exhaust being pushed through that if there isn’t an airtight seal. I saw something like this on YouTube somewhere.
    Thanks - now its rattling and not just whistling though i think it must be some metal broken.
     
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  4. Re: C6 S6 Engine Rattle – Manifold? 
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    I have seen the cam relay chains get very loose when the adjuster units fail which on bank 1 is at the back of the engine.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  5. Re: C6 S6 Engine Rattle – Manifold? 
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    Cool - does that get more rapid with revs? Assume so.
     
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  6. Re: C6 S6 Engine Rattle – Manifold? 
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    It depends on how the VVT unit is actuated, you can get a good feel for how bad it is after doing an oil change, if it death rattles and then shuts up you know you have issues, also a diagnostic output test of the system can be informative doing the “readiness code”
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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