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Old 2nd July 2017, 01:35 PM
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27litres 27litres is offline
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Join Date: Jan 2014
Location: Belgrave, Australia
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Default Oil burning smell coming through air vents in busy traffic

Hi guys.

Been tolerating this for a little while, as it's not often I'm in busy traffic these days...

The smell is almost certainly from under the bonnet and feeding into the cabin via the central air intake (I've seen better fresh air intakes in cars to be sure).

I already replaced the exhaust cam seal caps on the back of the heads about 18 months ago. I had fitment issues with them which may or may not have been caused by using RTV silicone when mounting them.
Also replaced the valve cover gaskets around the same time.
Smell was still there under the right circumstances.

So anyway, today I finally got around to changing the PCV valve (hockey puck).
I also changed the left hand cam cap again with a genuine one. However, it was in tight and not leaking. So I checked the right hand one, which was also not leaking, and left it alone.
Also checked around the valve covers. Some minor weeping around the top rear right cover (under the fuel hoses). Checked bolts which were all tight. No leaks on the left at all.

Basically there are now no leaks that would drip onto the exhaust anywhere at the top of the engine.
She's due for a visit to the hoist (ramp) soon, so I'll check for leaks below while she's up.

Is there anything I've missed?

I'm taking a peak hour drive out to the airport tomorrow (my Mum is actually on her way to London to go to her sister's funeral), so I'll give the new PCV a work out and see if the oil burning smell is still there...
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Cheers

Marty


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Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design
- has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!

Sold:
1997 Audi A4
- Hamilton's Club Sport, Achat Grey (will miss the old girl)
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