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ger
Trainee


Joined: 14 Jan 2010
Posts: 88
Location: Suffolk


PostPosted: Sat Apr 15, 2017 5:22 pm    Post subject: Ticking 996 Turbo Reply with quote

I have a track day booked on Wednesday and am rather concerned about the car. This ticking has been evident For around 60 miles and doesn't appear or diasappear with oil or engine temperatures. It only varies from RPM.

I have had bad luck with a snapped timing chain and an IMS failure in the past (different cars) so am very anxious.

Have a listen..

https://youtu.be/sTRR7cpcxTg

Thanks

Greg
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Demort
Sepang


Joined: 21 Mar 2015
Posts: 2772
Location: Sussex


PostPosted: Sat Apr 15, 2017 5:31 pm    Post subject: Reply with quote

It sounds like a tappet to me but i would prefer to have it on a ramp to diagnose and as you are going to track it then i think you should get it checked out prior to that .
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apollokre1d
Watkins Glen


Joined: 06 Nov 2012
Posts: 2027
Location: United Kingdom


PostPosted: Sat Apr 15, 2017 7:17 pm    Post subject: Reply with quote

Agree with the above, I would not track the car until its checked out.
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Jonathon555
Österreich


Joined: 04 May 2014
Posts: 921



PostPosted: Sat Apr 15, 2017 8:53 pm    Post subject: Reply with quote

Noisy injector ? Or tappet would be my guess. But i am sure an expert would be first port of call
 
  
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JM30
Newbie


Joined: 28 Apr 2013
Posts: 32
Location: SE KENT


PostPosted: Sat Apr 15, 2017 9:56 pm    Post subject: Reply with quote

Possible Water pump failing it sounds like? ticking / tapping noise, get it looked at to be sure as i'm sure you will be.
 
  
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Mac996t
Nürburgring


Joined: 26 Mar 2011
Posts: 436


2004 Porsche 996 Turbo

PostPosted: Tue Apr 18, 2017 12:20 am    Post subject: Reply with quote

I was going to say they all sound quite tappy but then realised it's only just appeared!

Something else I would add to the check list is a check of the exhaust and manifolds in case its blowing anywhere, any idea what condition the nuts are in on your car. There are lots out there where some of the nuts have corroded away to nothing !

Mac
 
  
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poppopbangbang
Nürburgring


Joined: 25 May 2015
Posts: 431



PostPosted: Tue Apr 18, 2017 12:33 am    Post subject: Reply with quote

Does sound tappety but then there are lots of things on all 996 and 997 that can sound like that which aren't actually that....

That is probably the most unhelpful sentence ever! I don't think we have a trackday on Wednesday but just in case we do and you are at Bedford I'm in on Wednesday, we are next door to the trackside suite (where you sign on) so feel free to pop over and knock on the workshop door, I'll have a listen for you.
 
  
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ger
Trainee


Joined: 14 Jan 2010
Posts: 88
Location: Suffolk


PostPosted: Tue Apr 18, 2017 10:39 pm    Post subject: Reply with quote

Thanks for all the help everyone, it's always a concern when anew noise develops!
I was booked up at Snet tomorrow but have cancelled.

I'm putting the Turbo into my trailer in the morning and taking it down to 9e. The engine was built by the team so they know it well. Hopefully it's something minor.
I shall keep you posted.
thumbsup
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Diggermeister
Monza


Joined: 26 May 2015
Posts: 210



PostPosted: Thu Apr 20, 2017 8:56 am    Post subject: Reply with quote

Probably the best decision.

As others say, there are a lot of things on a turbo Mezger that can make noises - they're renowned for being clattery at the best of times - and a good expert (9e would obviously rank as such) will diagnose it pretty easily.

I've currently got a tiny pinhole in my O/S header which is impossible to get a welder into (non OEM stainless manifolds) and that makes a ticking noise, but only at tickover.
 
  
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ger
Trainee


Joined: 14 Jan 2010
Posts: 88
Location: Suffolk


PostPosted: Thu May 04, 2017 7:15 pm    Post subject: Update Reply with quote

It was a broken exhaust tappet.
Apparently this is one of those things, fairly unlucky.

Replaced all six and converted to 2WD and GT2 clutch whilst the engine was out.

Pork hobby is expensive!
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plynchy
Hockenheim


Joined: 13 Aug 2004
Posts: 683
Location: Teesside


PostPosted: Fri May 05, 2017 9:46 am    Post subject: Reply with quote

That's one hell of a 'while the engine is out' job! Floor

I got my water pump changed Embarassed
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snb993
Spa-Francorchamps


Joined: 11 Mar 2010
Posts: 256



PostPosted: Fri May 05, 2017 10:07 am    Post subject: Reply with quote

good job you didn't take it on track Surprised

still, according to my personalised copy of 'the expert guide to man maths', it suggests that the money saved from not having your engine misbehave on track can be allocated to offset against the 2WD and clutch! Grin
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