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Shurv
Albert Park


Joined: 09 Jan 2013
Posts: 1717
Location: Northampton


PostPosted: Mon Jan 08, 2018 9:50 am    Post subject: Reply with quote

Mine recently needed a chain tensioner oil seal replacing due to a slight leak, nothing on the floor, but a small leak all the same. Not a big job.
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3740
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Mon Jan 08, 2018 10:43 pm    Post subject: Reply with quote

Shurv wrote:
Mine recently needed a chain tensioner oil seal replacing due to a slight leak, nothing on the floor, but a small leak all the same. Not a big job.


Thanks Shurv
Suspected oil leak is from chain tensioner seal but there’s also a “louder than normal” chain rattle from bank 2. Same bank as oil leak. Trouble is need engine out to investigate “rattle” from chain and I want that looked at so it doesn’t get any worse or cause future damage. Doh.. Surprised
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DynoMike
Barcelona


Joined: 25 May 2012
Posts: 1430
Location: The Cotswolds

2003 Porsche 996 Turbo

PostPosted: Tue Jan 09, 2018 9:18 am    Post subject: Reply with quote

Adam, surely it makes more sense to change the tensioner first and re-evaluate the ‘abnormal rattle’, before taking the motor out?
Dont know

That would seem more logical to me, unless they suspect the chain guides and chain. Either way, good luck, hope you get it solved quickly and cheaply. thumbsup
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Diggermeister
Spa-Francorchamps


Joined: 26 May 2015
Posts: 350



PostPosted: Tue Jan 09, 2018 10:17 am    Post subject: Reply with quote

The washers under the bolts on the timing chain covers have a habit of leaking. When I bought my previous car from an indie who will remain nameless, they'd cleaned it up, so you wouldn't know there was a leak, but I ended up getting Sports & Classic to drop the engine and sort it properly. This is a known issue on 996 turbo cars.

Rattle/noise from the timing chain is a bit more of a concern - less common or cheap to resolve, but I assume can be attended to at the same time.
 
  
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3740
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Wed Jan 10, 2018 10:11 pm    Post subject: Reply with quote

DynoMike wrote:
Adam, surely it makes more sense to change the tensioner first and re-evaluate the ‘abnormal rattle’, before taking the motor out?
Dont know

That would seem more logical to me, unless they suspect the chain guides and chain. Either way, good luck, hope you get it solved quickly and cheaply. thumbsup


Diggermeister wrote:
The washers under the bolts on the timing chain covers have a habit of leaking. When I bought my previous car from an indie who will remain nameless, they'd cleaned it up, so you wouldn't know there was a leak, but I ended up getting Sports & Classic to drop the engine and sort it properly. This is a known issue on 996 turbo cars.

Rattle/noise from the timing chain is a bit more of a concern - less common or cheap to resolve, but I assume can be attended to at the same time.


Thanks both for yr contributions Thumb
Just to update the thread

Precision have said they believe they’ve traced the oil leak to a union nut that needed tightening / adjustment. They have cleaned the area and suggested that I bring the car back in a month so they can re-asses to make sure no oil continues to leak.

This is not only to assess the oil leak but also the excess chain noise.
The theory is, if the leak is fixed but the noise remains they will consider doing a chain tensioner change to see if that quietens the noise.
If the leak isn’t fixed they say they’ll have to drop the engine to further asses where the oil is coming from and if this is the case, it makes sense to look at chain rattle whilst engine is out for yet oil leak.

I think they’ve been pragmatic about it and tried to avoid just dropping the engine (with the assosiated costs involed) until absolutely necessary.

Will keep you all posted as to what the outcome is but as always thanks for all the input and comments worship
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Last edited by adamw on Thu Jan 11, 2018 10:41 am; edited 1 time in total
 
  
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shantybeater
Nürburgring


Joined: 05 Sep 2012
Posts: 495
Location: Bournemouth


PostPosted: Thu Jan 11, 2018 9:20 am    Post subject: Reply with quote

Makes sense, I have a weep in exactly the same spot as you which I only spotted last week Embarassed

Will keep an eye on the thread for resolution.
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3740
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Sat Feb 17, 2018 8:49 pm    Post subject: Reply with quote

adamw wrote:
Trouble is need engine out to investigate “rattle” from chain


Just wanted to update this thread and close.

Re the “rattle” noise I decided to get a 2nd opinion as Precision couldn’t be sure as to the cause.

I chose to take the car to 9e which is only down the road to me. Have to say very impressed and pleased with service.

They recognised there was noise, but also said they’d heard allot worse and this unit can be notoriously noisy.

They ran my car next to a car of similar age and mileage that was in for routine maintenance and said the other car was allot louder than mine and it didn’t cause them any concerns.

The advice was to drive and enjoy and potentially in a couple of thousand miles It can be re assessed, but they didn’t see any concerns at all with my car.

They did say some of the noise could be a sticky lifter on bank 2 but this wasn’t ultra important to sort as of now.

Re the oil leak, this was traced to the union nut attaching the scavenge pump. 9e removed the pump and replaced the faulty washer. The oil leaks now fixed.

Happy chappy Very Happy

Thanks 9e team Thumb
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plynchy
Imola


Joined: 13 Aug 2004
Posts: 841
Location: Teesside


PostPosted: Sat Feb 17, 2018 11:37 pm    Post subject: Reply with quote

Reassuring result from a reputable source. thumbsup
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3740
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Sun Feb 18, 2018 9:21 am    Post subject: Reply with quote

plynchy wrote:
Reassuring result from a reputable source. thumbsup


Cheers Plynchy Thumb
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plynchy
Imola


Joined: 13 Aug 2004
Posts: 841
Location: Teesside


PostPosted: Sun Feb 18, 2018 10:16 am    Post subject: Reply with quote

Love the mechanical madness that goes on behind me when I fire the car up, it's so bloody loud in the garage.

Not quite as bad as the GT3's but not far off. thumbsup
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DynoMike
Barcelona


Joined: 25 May 2012
Posts: 1430
Location: The Cotswolds

2003 Porsche 996 Turbo

PostPosted: Sun Feb 18, 2018 1:57 pm    Post subject: Reply with quote

DynoMike wrote:
Hi Adam. I would hazard a guess that it may be coming from the union nut that you can see in the photo, but being blown all around the area by under-car air flow.

If the whole of the scavenge pump is wet then it could be the o rings behind it leaking. However, the nut looks very clean, as if that may be the source of the leak.

Either way, good luck.



Glad it turned out to be the scavenge union, had the same on mine a couple of years ago hence posting the above previously. As for noise, yes they do tend to chunter and grumble a bit as standard, some more so than others. 9e are obviously dealing with these cars on a daily basis so if they say it is normal don't worry!

Happy you have it sorted Thumb
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3740
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Sun Feb 18, 2018 2:13 pm    Post subject: Reply with quote

DynoMike wrote:
DynoMike wrote:
Hi Adam. I would hazard a guess that it may be coming from the union nut that you can see in the photo, but being blown all around the area by under-car air flow.

If the whole of the scavenge pump is wet then it could be the o rings behind it leaking. However, the nut looks very clean, as if that may be the source of the leak.

Either way, good luck.



Glad it turned out to be the scavenge union, had the same on mine a couple of years ago hence posting the above previously. As for noise, yes they do tend to chunter and grumble a bit as standard, some more so than others. 9e are obviously dealing with these cars on a daily basis so if they say it is normal don't worry!

Happy you have it sorted Thumb


Thanks Mike

I knew you suggested this earlier but couldn’t figure find the post - well done, spot on! worship
This forums a wealth of knowledge Thumb

I’m pleased it’s sorted too thumbsup
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