Both tensioners were replaced. Bank 1 is an OEM unit, replaced 4 years ago at Audi Service, (About 120.000km ago), the bank 2 that makes the noise, was replaced by myself about 80.000km ago with a brand new (FEBI I guess) unit (I replaced the Tensioner only, wothout replacing the chain!)
When installing the LPG, I also replaced the two oil check (one way) valves inside the block under the intake manifold (They sit in an upper oil pan).
I ran pretty much all possible oils as I thought it was an oil issue:
Mobil 1 0W-40 (10.000km)
Aral High Tronic 5W-40 (10.000km)
Mannol Extreme 5W-40 (10.000km)
Mobil 1 5W-50 (10.000km)
Ravenol RCS 5W-40 (15.000km)
Ravenol RRS 10W-50 (15.000km)
Mobil 1 Super 3000 X1 (10.000km)
.....
No luck.
And it's not just rattle. The chain is banging like crazy for few moments. There is no way I know when it's going to make it.
I can leave the car over night and it bangs the chain, or leave it for few days and it starts smooth.
I can leave it for 25minutes and it does the same. I have no check engine lights except now and then for a catalytic converter (value below treshold) which has nothing to do with this problem. The car goes and pulls like it should, I would say better than my 4.2 D3!
And I drive it alot. 150km daily at least. Now it has 467.000km on the clock.
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S8 D3 FL II.
Porsche Cayenne 958 Turbo
BMW E83 X3 3.0d M-Sport
Last edited by Versace; 25th March 2020 at 02:09 AM.
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