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  #1  
Old 26th January 2021, 10:22 PM
S81 S81 is offline
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Default Air inlet manifold

I'm removing the inlet manifold to check carbon and replace oil filter seals ,and I've noticed the inside of the inlet manifold has an oily ness about it ,is this normal or do i have a problem with the oil separator ,(84k miles ) the flaps look ok to me but I would like to operate them to be sure when I get it on the bench ,is it possible to do this without damaging them ? ,ps should i clean inside with a degreaser and hot water or better to leave it alone
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  #2  
Old 27th January 2021, 03:29 PM
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It is normal for some fuel and oil vapor and gas to go in there. I have fitted catch cans on each side now (after fitting a brand new intake). Those cans do collect some fuel and oil ahead of the PCV. In the hope that carbon build up is reduced...
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Old 27th January 2021, 06:22 PM
S81 S81 is offline
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Thanks if you get a chance could you send me a pic of cans so that I can see were to fit and the make and model of them please
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With Bang & Olufsen Advanced Sound System, Advanced Parking System, TV Analog/ Digital, Rear/Back Window blinds, Front and rear heated seats, Alcantara Roof, Extended leather Pack 2, Extended Aluminium pack, Carbon and Aluminium trim packs, RSE, PS2.
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Old 30th January 2021, 09:40 PM
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I noticed when I was carbon cleaning that the valve ports closest to the bulkhead had very little carbon were as the ones near the rad had a lot ,i'm guessing this has something to do with airflow ,(i didn't think to get a pic of the bulkhead ones that's the front ones )
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With Bang & Olufsen Advanced Sound System, Advanced Parking System, TV Analog/ Digital, Rear/Back Window blinds, Front and rear heated seats, Alcantara Roof, Extended leather Pack 2, Extended Aluminium pack, Carbon and Aluminium trim packs, RSE, PS2.
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Old 6th February 2021, 03:41 PM
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Sean would you have had the torque setting for the inlet manifold ,o checked the tech sections and threads but either have missed it or can't find them ,i have manifold cleaned and checked and back in just need to torque it down before refiting fuel pipe pumps etc
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With Bang & Olufsen Advanced Sound System, Advanced Parking System, TV Analog/ Digital, Rear/Back Window blinds, Front and rear heated seats, Alcantara Roof, Extended leather Pack 2, Extended Aluminium pack, Carbon and Aluminium trim packs, RSE, PS2.
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  #6  
Old 6th February 2021, 06:40 PM
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homer simpson homer simpson is offline
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This should help
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  #7  
Old 6th February 2021, 06:42 PM
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That's it thanks
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  #8  
Old 6th February 2021, 08:13 PM
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Manifold back on without any trouble,and torqued down thanks to homer ,couldn't get the drivers side rear fuel pipe tightened due to lack of space ,i'm thinking i should have tighten it before i put manifold in and tightened it ,will have to have an another look ( unless someone has a trick)
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Audi S8 D3 07MY 5.2 V10 Daytona Grey
With Bang & Olufsen Advanced Sound System, Advanced Parking System, TV Analog/ Digital, Rear/Back Window blinds, Front and rear heated seats, Alcantara Roof, Extended leather Pack 2, Extended Aluminium pack, Carbon and Aluminium trim packs, RSE, PS2.
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Audi A8 d4 2014 phantom black 3.0 tdi

Previously owned
Audi 80 1986 1.8 white
Audi 80 1990 2.0 red
Audi A4 1996 1.9 tdi green
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Audi tt 225 2000 silver
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  #9  
Old 7th February 2021, 11:58 AM
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Quote:
Originally Posted by S81 View Post
couldn't get the drivers side rear fuel pipe tightened due to lack of space
I saw your request yesterday but since homer had already responded, never thought anymore about it. Now seeing this comment, I wish I had thought more about it, as I had the same issue with the rear passenger side. The previous owner had fitted a new manifold at around 100k and during spirited driving you'd get the smell of petrol fumes. New owner was informed about it and when checked it was because the pipe hadn't been tightened enough. Unfortunately I can't offer any advice on a solution.
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Old 7th February 2021, 12:17 PM
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I'm going to try a basin spanner to see if it works ,there is enough room down in there but a lot of obstacles above and around it ,
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With Bang & Olufsen Advanced Sound System, Advanced Parking System, TV Analog/ Digital, Rear/Back Window blinds, Front and rear heated seats, Alcantara Roof, Extended leather Pack 2, Extended Aluminium pack, Carbon and Aluminium trim packs, RSE, PS2.
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Audi A8 d4 2014 phantom black 3.0 tdi

Previously owned
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Audi tt 225 2000 silver
Audi s8 d2 2002 fe grey
Audi a8 4.0 tdi d3 2006 black
Audi a8 3.0 tdi d3 2010 black
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