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Misfiring engine codes P0300, P0305, & P0306

Audi A6 The mid-sized Audi A6 model offers more room to the driver and passengers over the A4 line.

Misfiring engine codes P0300, P0305, & P0306

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Old 11-11-2013, 07:30 PM
1st Gear
Thread Starter
Join Date: Aug 2010
Location: Memphis, TN
Posts: 39
Default Misfiring engine codes P0300, P0305, & P0306

After changing the spark plugs, I was informed that I had suspect coil packs on cylinders 5 and 6. (it wasnt the coil packs) I eventually cleaned my throttle body, PCV valve and added a can of Seafoam. After cleaning the PCV valve with carb cleaning spray, I can say it was the PCV valve - approx 1 ounce of carbon buildup came out. The cleaning of the throttle body, new plugs and seafoam didnt hurt either.
 
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