After searching high and low... google to haynes to here... I cannot find the proper gap. Actually haynes said .063. I wanted to double check.

The car had a p0303 code that represented a misfire in cyl 3. What is the most common problem for this?

Thanks a lot.

 

http://www.audiworld.com/tech/eng36.shtml
my 1.8 needs .028 - .035 gap not sure if its the same on the 2.8 you should check than tho

edit, found it

Specification

# Spark plugs (AEB, 1.8L engine) Gap 0.70 to 0.90 mm (0.029 to 0.035 in)
Spark plugs (ATW, AWM, 1.8L engine)
# Gap 0.80 mm maximum (0.032 in)
Spark Plugs (AFC, ATQ, 2.8L engine)
# Gap 0.90 to 1.10 mm (0.035 to 0.043 in)
Spark Plugs (AHA, 2.8L engine)
# Gap 1.6 mm (0.063 in)