Slight oil burning smell after brief feats of strength
09-11-2018, 12:56 PM
#1
Burning Brakes
Thread Starter
Slight oil burning smell after brief feats of strength
Is this normal?
I understand that oil consumption is to be expected, but if I smell something north of the tailpipe does that necessitate a leaking valve cover or worse?
I recently replaced all of the plugs and coils and didn't notice anything dirty in the area (although admittedly, I wasn't looking).
This is an 03 Turbo with 64,000 miles.
I understand that oil consumption is to be expected, but if I smell something north of the tailpipe does that necessitate a leaking valve cover or worse?
I recently replaced all of the plugs and coils and didn't notice anything dirty in the area (although admittedly, I wasn't looking).
This is an 03 Turbo with 64,000 miles.
09-11-2018, 01:21 PM
#2
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The valve cover gaskets are known leak points when they get old enough - and it might drip down on the exhaust manifold - causing the smell.
If you intend to DIY - read https://rennlist.com/forums/cayenne-...cayenne-s.html - as a caution on what to avoid. Apparently, the valve cover on the passenger side is tight enough in location to other bobs and bits in the engine compartment - that it's possible to damage the camshaft-position-sensor-wheel on that side. As I noted in the referenced thread - this isn't the first time I've heard of this happening. Dunno how hard it would be to really clear that area out of obstructions - but given the alternative, the effort might be worthwhile.
If you intend to DIY - read https://rennlist.com/forums/cayenne-...cayenne-s.html - as a caution on what to avoid. Apparently, the valve cover on the passenger side is tight enough in location to other bobs and bits in the engine compartment - that it's possible to damage the camshaft-position-sensor-wheel on that side. As I noted in the referenced thread - this isn't the first time I've heard of this happening. Dunno how hard it would be to really clear that area out of obstructions - but given the alternative, the effort might be worthwhile.
09-11-2018, 02:08 PM
#3
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Rennlist Member
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Our S had occasional oil burning smell off and on over the last few years until this year when it got noticeably worse.
I changed the valve cover and plug seals this year and presto, no more smell. It’s a chore, but take your time and it’s fine. Had more trouble on the driver side than the passenger side. Just have a low profile socket driver for the pain-in-the-*** bolts in the very rear.
09-12-2018, 12:19 PM
#7
Not really the intercooler. It can be degreased without too much effort. The real issue is that burning the excess oil will sludge your throttle body valve, the back of the valves, foul the plugs, and increase havoc on the o2 sensors and cats over time. It is best to empty that hose every oil change or better yet install a catch can.
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09-12-2018, 12:49 PM
#8
Our S had occasional oil burning smell off and on over the last few years until this year when it got noticeably worse.
I changed the valve cover and plug seals this year and presto, no more smell. It’s a chore, but take your time and it’s fine. Had more trouble on the driver side than the passenger side. Just have a low profile socket driver for the pain-in-the-*** bolts in the very rear.
09-12-2018, 02:10 PM
#9
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Rennlist Member
Rennlist Member
Yep, did it in the garage. Bank 1 one weekend, Bank 2 on the following weekend.
Pelican Parts has a good DIY: Valve Cover Gasket Replacement
On Renntech, there's a thread with some useful info as well: Valve cover gaskets replacement
and a thread I posted a while back: Valve cover gaskets, PIA!
Pelican Parts has a good DIY: Valve Cover Gasket Replacement
On Renntech, there's a thread with some useful info as well: Valve cover gaskets replacement
and a thread I posted a while back: Valve cover gaskets, PIA!
09-13-2018, 02:49 AM
#11
Thank you so much guys, I will go through the DIY and see if I could tackle this. I have 957 GTS, wondering how different will this be.
Last edited by Rossi; 09-13-2018 at 03:08 AM.
09-20-2018, 10:23 AM
#15
Rennlist Member
I don't know the underhood difference on a 955 vs a 957 for valve cover clearance but I did my 955. It was easy. The cam thing is no big deal. You just follow the pelican write up and you'll have no issues. Nothing should catch when you take the cover off. If stuck, don't pull. You'll have no problems
