Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
Am I missing an O ring?
Hi guys,
I've just fitted a new air filter and I'm curious as to how the air intake tubing is supposed to seat and seal onto the bit that disappears beneath the engine?
You can see the bits I mean in the pictures below and I can understand that it sits flush on top of the tubing but should there be rubber O- rings to seal it as there aren't any on mine??
There does appear to be a place where O rings could seat on that tubing that disappears but on my vehicle no rubbers exist. The plastic tubing from the airbox sits slightly loose which seems odd.
Click image to enlarge
Click image to enlarge
Thanks!
Brace
21st Sep 2023 1:09 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
Yes there should be a seal, just make sure it's not attached to the end of the cross pipe. It's important that the seal is in place or you'll get grit going through the turbo as well as unmetered air causing power loss and dtc's!yµ (idµ - eAµ) ψ=mψ
21st Sep 2023 2:10 pm
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
Thanks for confirming. It's definitely not in the cross pipe and has probably been missing for the whole time I've owned the car - over 2 years!
Will get on Ebay straight away!
21st Sep 2023 2:18 pm
eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 810
hmm never seen a o ring on mine you sure there should be one in there
if so can you post a p/n so i can get one thanksplease excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
21st Sep 2023 3:03 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
It's a corrugated rubber ring that sits over the lower section of the pipework, the upper section pushes down into it to form an air tight seal.yµ (idµ - eAµ) ψ=mψ
21st Sep 2023 3:21 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8243
May be worth taking the sump guard(splash tray) off and seeing if it's dropped in there!It can when others can't,
It will when others won't,
It goes where others don't.
21st Sep 2023 4:15 pm
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
Looks like the part number for the tubed piece that runs underneath the engine is - PHD500082.
I've found examples of salvaged parts online and also an exploded diagram but can't see the rubber flange described. PROFSR G - Are you certain that it exists and any chance you have a picture or P/N please?
22nd Sep 2023 10:52 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8243
There was a post a few days ago where a guy had had poor performance for 2years and thought it was the norm until he found this ring had been fitted wrong and was partially blocking the air inlet. It can when others can't,
It will when others won't,
It goes where others don't.
22nd Sep 2023 11:03 am
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
Haha, that post was me but it wasn't this ring missing... it was the airbox not seating correctly against the vent in the wing 👍
Thanks though
22nd Sep 2023 11:18 am
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
OK, I've found what it looks like but suspect it's not a separate part and only comes with the complete tubing
Click image to enlarge
If anyone has any ideas then let me know. Otherwise I might see if I can find a salvage part which still has this on.
22nd Sep 2023 11:57 am
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18573
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
Perfect Martin - thank you. The symptoms described here have afflicted my TDV6 too
22nd Sep 2023 12:46 pm
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 185
UPDATE
In case anyone was interested, I ordered P/N PHD500082 from a salvage yard ensuring that the rubber connector was present...cost me £25 delivered.
Fitted the rubber sleeve and it's made a really noticeable difference...fantastic! I used to hear a sort of roar on hard acceleration which I'd always attributed to the diffs and was generally a bit gentle with them but that roar has now gone so it must have been an induction noise probably from the 2 plastic ends (not sealed with the rubber bit) vibrating and making noise.
Low speed pickup below 2k revs has improved noticeably and the car finally drives and responds as I've always felt it should....happy with that!
Nice to have a repair that's cheap for once! Now, to the garage next week for a new wheel bearing, both front lower arms and rear arms along with track rod ends....back to expensive bills as per usual!!
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