Go Back  AudiForums.com > Audi Models > Audi A8
valve knocking noise on a 2004 >

valve knocking noise on a 2004

Audi A8 This full sized Audi A8 sedan offers interior luxury and spaciousness comparable to any car in the full sized luxury sedan class

valve knocking noise on a 2004

Old 07-11-2010, 07:11 PM
1st Gear
Thread Starter
Join Date: Jul 2010
Posts: 14
Default valve knocking noise on a 2004

my engine has been knocking a little, its like a valve ticking noise or rocker arms or something like that. it only starts making this noise when the engine warms up.

i heard from a few people to put heavier oil in, and so i did, i did 5w-30 synthetic and its the same problem.

is there something i can do to get rid of this noise without tearing the engine apart? the car only has 90k on it.

heres the link to the video of the engine... -> http://www.youtube.com/watch?v=9aaJ9SstfpU
Old 07-20-2010, 06:15 PM
auditech79's Avatar
Site Moderator
Join Date: Feb 2007
Location: Nor Cal
Posts: 9,004

Well i don't mean to ask the obvious, but is the ticking engine speed related? Try taking off the accessory belt and running the engine to see if the noise is still there. If it is, find a good vacuum line (i use the FPR line) and slowly pour in a can of seafoam until its empty. This will make the motor bogg down and heavy smoke will come from the exhaust, but it will clean all that carbon out of your engine. If you fancy ARCO (British petroleum) gas (which is crap BTW) it will foul up the intake valves something awful and it needs to be cleaned out. I would also pour a half can of seafoam into the crankcase, drive 50 miles and change the oil and filter. That thicker oil trick only ever works on american cars for some reason.
Old 07-23-2010, 10:12 AM
J.C.'s Avatar
1st Gear
Join Date: Jul 2007
Location: Las Vegas
Posts: 106
Default This may help

Sometimes the spark plug wires come loose from the spark plug or the coil. I have not really checked if the coil sits on top but check them to make sure they are tight and connected. Just one thing to check that is easy and often over looked.
Related Topics
Thread Starter
Last Post
Audi A6
01-05-2010 09:05 PM
B5 Models
07-28-2008 03:16 PM
All Other Audi Models
02-18-2008 10:43 PM
Audi A4
12-03-2007 10:24 PM
General Tech
03-29-2005 08:44 AM

Thread Tools
Search this Thread
Quick Reply: valve knocking noise on a 2004

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.