18th September 2017, 07:06 AM
|
 |
Senior Member
|
|
Join Date: Jan 2014
Location: Belgrave, Australia
Posts: 803
|
|
One potential place they may be getting in is past the foam 'seal' surrounding the HVAC intake on the plenum.
Part number: 4D0820513A
If you've never replaced it, it's probably starting to deteriorate.
Otherwise, the fit and finish on the pollen filter housings isn't perfect (there's an irony if ever I've come across one!). They do get a degree of positive sealing provided by the bonnet closure onto the outer plenum rubber covers, but it's all ageing. You could attempt to investigate that area to improve the gaps perhaps??
__________________
Cheers
Marty
____________________
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)
|