S3 Sounds Like A Diesel On Startup.... - Page 3 - Audi Forums
8L Forum 1996-2003 Audi A3, Audi RS3 & Audi S3 (Audi A3 Forum, Audi RS3 Forum, Audi S3 Forum)

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post #21 of 23 (permalink) Old 03-10-2011, 10:01 AM
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hi, i had a similar problem during cold start, my mechanic said it was sludge in the engine, so it went in for a clean up, it quietened down for a week and then started again. i reckon you attend to it asap as i snapped a conrod and punctured the block, not sure if that sound was the cause, i think it is the chain that is making the sound
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post #22 of 23 (permalink) Old 05-05-2012, 11:04 AM
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Hi all,
I think that to me is not normal, and there two possibilities that i can think of
1 - the grade of oil you use - why not try synthetic oil say something like Castrol/shell helix 0w30, 5w30 or 10w40.
2 - the Toothed/Timing belt tension spring or piston, could be going weak - check it.

I hope its one of that...

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post #23 of 23 (permalink) Old 04-05-2015, 05:41 PM
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Hi I got a Audi A3 s reg done 70k 1.6 petrol And whn warm it smokes bad I changed the oil and there was like 6 litres of oil where the guy before me put to much in I've serviced it cleaned throttle body ect the revs bounce a bit as well anyone got any ideas thanks Scott
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