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o2dvs
05-08-2009, 07:02 AM
Hello.
2003 a6 3.0 automatic 89500 miles
every morning i start my car im guessing its the lifters that makes noise for about 2-3 seconds then goes away( clack clack clack).. im looking for info on what excatly might be the problem/ cause and repairs . had the oil change about a week ago mobile 1 5w 20 full syn. car runs fine other then that.
can't think of any other info to add at the moment ,i will provide.

old guy
05-08-2009, 07:50 AM
Hello.
2003 a6 3.0 automatic 89500 miles
every morning i start my car im guessing its the lifters that makes noise for about 2-3 seconds then goes away( clack clack clack).. im looking for info on what excatly might be the problem/ cause and repairs . had the oil change about a week ago mobile 1 5w 20 full syn. car runs fine other then that.
can't think of any other info to add at the moment ,i will provide.

You should be running a heavier oil. At least a 5w-30. I would recommend a 5w-40. Here is the Approved oil list Clicky click (http://www.audiusa.com/etc/medialib/cms4imp/audi2/aoa/company/aoa-specific.Par.0023.File.pdf)

o2dvs
05-08-2009, 10:03 AM
thanks for the tip i will be changing it tonight.. ill update after the oil change

o2dvs
05-11-2009, 11:21 AM
just an update, i was running 5w30 not 5w20 i did a engine flush and refilled with 5w40 and still after the vehicle sits for awhile on start up the noise is there for about 1-2 sec then goes away.no codes or warning lights oil is filled it its proper line ive used a audi oil filter ,.. ive driven about 300 miles since last oil change.
Any, advice or suggestions are greatfull
2003 a6 3.0 automatic 89800 miles

old guy
05-11-2009, 03:57 PM
I don't know if this will make you feel any better but a slight rattle at start up is a common complaint with the 3.0. Especially after the miles begin to add up. heavier oil will generally help, but in your case it didn't seem to. Here are a few examples over the years:
Clicky click 1 (http://forums.audiworld.com/showthread.php?t=2324546&highlight=3.0+lifter+noise)
Clicky click 2 (http://forums.audiworld.com/showthread.php?t=2260385&highlight=3.0+lifter+noise)

377Z
05-11-2009, 04:17 PM
When the motor is cold, if you rev it a bit (say a throttle blip up to 3-4,000 RPM), does it also make a clatter like chain links being dropped onto the ground for like a second as the motor comes down to idle?

What about as you coast to a stop (again, engine basically cold), off the throttle, does it make a faint clatter? (I can only hear it when the windows are down & I'm slowing next to something that reflects my car's noise, like a fence, wall, high curb, or side of a building)

My 2004 3.0 with 54K clatters like this, as well as the (apparently) customary few seconds after cold startup. Bought it with 42K about a year ago, service history unknown.

My theory is that it is something about the lifters--either they or their bores or both are worn, allowing slop until everything warms up. I wasn't worried since everyone seems to say its normal, but then I saw a couple threads here where folks mentioned that their clatter suddenly took a turn for the worse, the valvetrain beating itself to death & taking the rest of the motor with it.

I guess I'll at least get a superficial look when the timing belt gets done when the car is in the 70K range later this year, but right now I don't plan on pulling the cams & inspecting the lifters & bores during the TB job (not even sure I'll actually get a chance to do it myself). If I was more familiar with the AVK valvetrain I might have planned to plunge in at that time, but I'm not confident in my ability to judge whether or not to buy $700 cams & lifters at $30 ea. (x30!) with just a look. It also doesn't appear there is any provision for adjustment to run a reduced base circle cam (i.e. reground stock). ANyone who priced a 30V 3.0 is familiar with the potential downside of doing nothing. Not sure what to do.

For right now until I make up my mind on what to do, I'm running the heaviest synth I can find, group IV if I can find it.

JEENYUS
01-23-2010, 04:23 PM
I don't know if this will make you feel any better but a slight rattle at start up is a common complaint with the 3.0. Especially after the miles begin to add up. heavier oil will generally help, but in your case it didn't seem to. Here are a few examples over the years:
Clicky click 1 (http://forums.audiworld.com/showthread.php?t=2324546&highlight=3.0+lifter+noise)
Clicky click 2 (http://forums.audiworld.com/showthread.php?t=2260385&highlight=3.0+lifter+noise)

in these examples (i believe "clicky click 1") it says that they used a lighter weight oil like 0w-40 and that solved the issue. but what you are saying is to use a heavier oil to take care of this issue like 5w-40. so now i am confused... which one is it? i have the same issue.