Location. Mount Cobb, PA. My Photo Gallery: 0. Can check your valve cover gaskets. Pull out the ignition coils and look in the holes where your spark plugs go. If there is oil inside, the gasket is leaking. Sent from my SM-N960U using Tapatalk. 02-14-2021 04:33 PM #3. F1Wolfgang. Sep 24, 2010. #2. most comon fault, is the front wiper mechanism siezes up, arounf £60 for a new one from audi. engine wise, the 1.8 Turbos suffer from oil sludge, blocking the oil pick up, causing oil starvation to the top of the engine, resulting in knackerd engine, but as long as the car has been well serviced it should be ok. C. The most common causes for AC not cooling properly in Audi S4 are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend door Check here for the most common problems on the B8 A4. Audi B8 vs. B8.5 Reliability. The general consensus is that the B8.5 S4’s are significantly more reliable than the B8 S4’s. One of the main problem areas of the B8 models was the DSG or “S-Tronic” transmissions. The transmissions had issues with the mechatronics, caused by design Changed coil pack cylinder 6 with a coil pack i had sitting around (i had changed all coil packs a week earlier). Same two codes and CEL (car on idle, not driven): * Random/Multiple Cylinder Misfire: P0300. * Cylinder 6 Misfire Detected: P0306. Put a new cheap single electrode spark plug in cylinder 6. Thanks. Based on the vehicle and the symptoms. I suspect you have failed timing chain tensioners. This is the most common failure on B6 and early B7 4.2l. These engines are unfortunately notorious for this. Most of the time you'll only store misfire faults if the timing is only slightly compromised. This causes an air leak into the manifold. Unclip and remove the plastic cover at the front of the engine. You will see the vacuum actuator, control rod and lever at the front of the inlet manifold. Start the engine on idle and watch the lever on the flap valve shaft. The vac unit should activate and move the shaft about 40 degrees clockwise. The B6 S4 packs a 4.2-liter, 40-valve V-8 making 339 horses in stock form, with Audi's legendary dynamics and Quattro all-wheel drive, all for less than $10,000 with a little hunting EyL0af.

audi s4 b6 common problems