Rattle/Knock A4 2.0 TFSI Quattro

Started by mikeleenz, June 05, 2023, 02:23:12 PM

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mikeleenz

Hi all,

My sons A4 has suddenly developed a knocking sound.

Sounds identical to this : https://youtu.be/T0y6qByzs6Q

Anyone recommend a mechanic good with these that won?t bankrupt my son for the repair?

Cheers
Mike

superfueler

Hi Mike,

Not an expert with these engines, but perhaps an oil pressure issue? Hydraulic lifters not getting enough oil or something to that extent? I take it he has checked the oil level is OK? Could possibly be air related also.

Where are you located?
Current: 2010 Audi A4 2.7 TDI silver, 2007 Audi A4 2.0T DTM sprint blue, 2007 VW Golf V 2.0 TDI BKD 4motion manual white.
Past: 2004 Golf R32 black pearlescent, 2009 Audi S3 white, 2004 Audi A4 B6 1.8T blue, 99 Golf mk4 GTI black, 2005 Audi A4 B7 2.0T black.

superfueler

From Motor reviewer website, see note 2.

VW-Audi 2.0 TSI/TFSI Engine Problems and Reliability
1. High engine oil consumption. It is the usual situation with cars, which mileage is more than average. Often the reason is lousy oil rings or valve of crankcase ventilation.
2. Knocking, like a diesel engine. The reason is wear of camshaft chain tensioner.
3. A car doesn't accelerate at high rpm. This issue will solve by replacement the pusher of the high-pressure fuel pump.
4. Loss of power, horrible acceleration. The problem lies more often in N249 bypass valve. Many people prefer to remove N249 bypass valve.
Current: 2010 Audi A4 2.7 TDI silver, 2007 Audi A4 2.0T DTM sprint blue, 2007 VW Golf V 2.0 TDI BKD 4motion manual white.
Past: 2004 Golf R32 black pearlescent, 2009 Audi S3 white, 2004 Audi A4 B6 1.8T blue, 99 Golf mk4 GTI black, 2005 Audi A4 B7 2.0T black.

mikeleenz

Thanks, have sent it in to SB European to work their magic

superfueler

Current: 2010 Audi A4 2.7 TDI silver, 2007 Audi A4 2.0T DTM sprint blue, 2007 VW Golf V 2.0 TDI BKD 4motion manual white.
Past: 2004 Golf R32 black pearlescent, 2009 Audi S3 white, 2004 Audi A4 B6 1.8T blue, 99 Golf mk4 GTI black, 2005 Audi A4 B7 2.0T black.