|
D2 - Engine Bay Everything under the bonnet |
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
A8 V8- VERY tappety on cold mornings.
Any ideas? There is always a momentary slightly more rattly engine sound when I start up, presumably before the oil has circulated. However at the moment, and particularly today, the engine was noticeably louder for c.5secs.
Any ideas- Right/wrong oil etc? Or should I be checking the oil pump? There are no warning lights coming up and AFAIK the oil level is fine, although I'll check it in the morning (Was fine a couple of weeks ago and didn't seem to have used any for months up to then) It sounds like a bag of spanners. Not for long. But I'm worried. |
#2
|
|||
|
|||
I Hope it's nothing serious! without a pressure gauge i don't know how you'd check oil pump operation but if you don't know what grade oil is in it, swap it out for the correct grade, better safe than sorry! Make sure you also use a quality filter, some cheap pattern filters don't have anti return valves in them and oil can drain back meaning you get a moment of chatter until the oil gets back where it's needed. It's really cold and if the oil is too thick it will only get thicker in cold weather and take longer to get about.
|
#3
|
||||
|
||||
It is normal for a short spell of tappet sound as the oil pressure builds up and this will be made worse on very cold mornings. It would also be made worse if you were running the wrong oil. The owners handbook gives oil grades based on average tempretures.
__________________
Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. |
#4
|
|||
|
|||
Thanks for that. It's a nasty sound when it's really cold The Barge is due an oil change fairly soon anyway so I will make sure the proper grade goes in this time- If in fact it was wrong last time
|
#5
|
||||
|
||||
i had this on my FL 3.7 QS when i still had it...i wouldn't worry about it...it's just the oil getting around. Like Mike says, make sure to check the oil type just to be sure though
__________________
CURRENT: 2006 Audi A8 D3 4.2 Tdi QS - CLICK HERE FOR PROJECT THREAD: Audi Exclusive Azure Blue, Amaretto brown interior, facelift rear lights, S8 mirrors, B&O, ACC, Digital TV, glass sunroof, Fridge, Extended Leather Pack 2, wooden steering wheel & gearknob, keyless entry, keyless start, electric boot, softclose doors SOLD : 2000 FL Silver D2 4.2 QS - Solar sunroof, Bose, Blinds, NavPlus, Playstation, DVD, wireless headphones, iPhone AV connection, RS6 steering wheel, chrome mirrors, phone prep, xenons, servotronic steering, Rear screen, TV-in-motion, NavPlus Alu rings, S8 exhaust, S8 bonnet grille, 385mm D3 S8 brakes, rubber winter mats, De-badged rear, US rear indicator clusters, 20" Final Edition diamond cut wheels, 15mm Eibach Pro spacers (front), 20mm H&R hubcentric spacers (rear). Audi A8/S8 D2 Flickr Group |
#6
|
||||
|
||||
the following threads might help reassure - especially the first - read the service bulliten attachment posted by mike
http://www.tyresmoke.net/forum/audi-...-start-up.html http://www.tyresmoke.net/forum/audi-...y-running.html http://www.tyresmoke.net/forum/audi-...old-start.html
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs Last edited by Architex_mA8tey; 25th December 2009 at 03:53 AM. |
#7
|
|||
|
|||
Thanks for that . It's difficult to explain but it's a horrible noise- Not even tapping as such, just a bit of a screech which goes away very quickly. The above threads do somewhat make me feel better though.
I have started to think that it's actually not engine related, the engine sounds fine "Underneath"- Could this be anything to do with the gearbox- Low oil or something? Coincidentally it is starting to play up a little- Nothing major, just a few slightly rough changes and a bit of hesitation... You'll need to put a new "spotted" up soon though- I'm taking the OH's yellow Mini One to and from work for the time being. I don't think the A8 likes the twice-daily run from cold, it's only 2-3 miles to work through heavy traffic. Last tank of fuel did 165 miles on £70... Having said that, I was due to take it to work on the snowy morning. Glad I took the A8- Only me and a few 4x4s braving it, lesser cars stuck everywhere- I love quattro! |
#8
|
|||
|
|||
Screech on startup and dodgy shifts sounds like you need a fluid and filter change on the gearbox...
I assume it's a 5-speed?
__________________
2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#9
|
||||
|
||||
Wot he said. If you head said screech at start up the Transmission followed by AC compressor bearings would have been my suggestions. You can bowl out the AC compressor by switching to Econ while the noise is happening. If the noise stops it the AC Compressor.
With the transmission the noise goes away as the box warms up.
__________________
Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. |
#10
|
|||
|
|||
Thanks- The noise is very transient- Stops within literally a couple of seconds. I will try the A/C switch if I can within the time it happens. In that case, still likely to be gearbox? If so, how much is a fluid/filter change?
PS. Yes- It's a five speed |
|
|