no misfire cel but logging shows very light misfires

B6/7 S4/RS4
#1

Car runs great, no obvious signs of misfires but I am still trying to diagnose my shitty fuel economy. Compression test showed excellent compression, I’ve changed air filter, fuel filter, pcv valve, spark plugs and still crappy fuel economy. I can get pretty good mileage to work (17mpg) because its all downhill, but going home it’s often 10-11mpg with a very light foot.

I have had all the coilpacks replaced about a year ago under the recall, but I thought maybe I should see if any are misbehaving. So I decided to log for misfires on my way to work, about a 15 minute commute very light throttle. I only logged 015/016 but that only got me logs for Cylinders 1-6. Do I log 017 to get cyl 7&8?

I’m still pretty new to vag-com but 3 cylinders reported 1 misfire, with one of those cylinders having 1 misfire at two separate times.

Cylinder 1
1 misfire when the timestamp was 338.31-352.65

Cylinder 4
1 misfire with was 226.74-324.84
another 1 with timestamp 515.81-560.84, but it was fine the rest of the trip.

Cylinder 6
1 misfire with timestamp 133.05-163.17.

Overall timestamp was 0-1032

I figured while this is not super serious the car should probably never misfire? Or are occasional ones like this ok?

#2

did you not already have a thread about your fuel efficiency? Why not keep this in there instead of starting a new one? Just means everyone is going to ask you 15 questions before they understand where you are or what you’ve already done/tried.

I’d just add this post to that old thread, and have admin delete this thread. Report my post to alert GOD that you need a thread deleted.

#3

The fuel efficiency is what drove me to log misfires but I felt this was a new thread on a different topic.

Getting a single misfire on a few cylinders, is that normal or a warning sign of things to come?

#4

Ya bud combine this thread adjust the original post

Those miss fires are fine wouldn’t worry