Loud rattle on cold start
I am noticing a loud rattle on cold start for approx 2 or 3 secs and then disappears. On subsequent restarts, I still hear a rattle but not as bad. Am I looking at a timing chain replacement ? Car has 87K miles and has been regularly serviced.
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chain probably fine. Audis tenisoners SUCK. search your VIN for a TSB. probably a bulletin out for it. aka free fix.
my q7 TDI does it randomly too. |
For OP, more info please. Helps orient relevant responses if we know your year, motor, and sometimes at least general geography/country.
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My 4.2 will have loud valve clatter on start sometimes, but once the oil pressure comes up after a second or two it goes away. Same thing with my old 2.0T.
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He has a 2012 3.0 TDi.
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Originally Posted by PhillyVance
(Post 25193835)
He has a 2012 3.0 TDi.
By contrast if it is gas/petrol, then some other things come into play as possibles. |
Its definitely a diesel, you actually answered another question he had about a load of check engine lights. You told him to change the battery and he did, poor guy hasn't had the car long. I had a 2006 jetta tdi pre deiselgate and it cold started up loud as well. Maybe check the egr?
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im 99% certain what he is referring to is the chain tensioner. These diesels are very quiet. Chain tensioners make a very distinct clacking osudn and you hear the chain flopping around as well. Goes away after about 1.5 seconds.
Check your VIN against the national database of TSBs |
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