Hi I am Alex Malik and i am a newbie to this as well.i just bought a
Audi A6 2004 quattro with 3.0 motor,which had the bent exhaust valves,removed both heads
and sent them to machine shop got them complete overhauled with new valves and seals,replaced water pump and all the tensioner and thermostat with new timing belt.and used all Audi special timing set tools.every thing was ok till today check eng.light came on giving me CODE PO1057, now I am lost any help will be appreciated
PS I am a license mechanic and have worked on these cars till 1999 and then moved on to heavy duty Diesel engines.