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

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?

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.

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

What did they find?