Engine Mechanical problem
2001 Audi Quattro 6 cyl All Wheel Drive Automatic 141000 miles
I have a 2001 Audi A6 Quattro 2.8. I replaced valve cover gasket yesterday and afterwards, 1st and 2nd spark plug on the driver's side from the front didn't work. I replaced the plugs and wires, but the problem is still there. Please help.