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Discussion Starter #1
One for the 3.0 CRD owners.
For a little while I have now had this horrible rattle, but only on start-up from cold and only for about 10 secs or so.
Anyone come across this or have a suggestion?

Please see video for the noise.



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The sound comes from valves. Namely, from the hydrocompensator bars. It's time to fix them or you'll broke valve stems (with everything that follows). Also I think that you change you oil too rarely and engine has enormous sludge deposits in all its corners. As a chip medicine I'd try to wash the engine (what I do at every oil change) with a help of Liqui Moly's Oil Schlamm Spülung (part number 1990, add 2 cans into the oil before its change and then drive for about 100 miles), then change the oil as usual (I recommend Fuchs Titan Pro Flex 5w-30 because of its great pumpability). After that, the sound should be more quiet and shorter. But the process of hc bars' has begun so it's just the half-measures.
 

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Thank you for your reply.
Oil change and engine flush was done recently, but I haven't had the car that long so can't vouch for previous owners.

I will look into your suggestion.


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