fate998

So while driving home from work a few weeks ago, my car started running rough, found out my plug into my maf sensor if broken, but it stays plugged in and is just an annoyance, not my issue, I have two sensors so I cleaned both, and swapped to the one I know is good, (or was good) go drive and it starts doing it again, it's not consistent it comes and goes, and every now and then is happening right from cold start, im at a loss right now, I don't have a vag com yet, I do have a scan tool that's not showing any current or pending codes, showing my emissions is all fine, but this one screen I'm not sure what it means...

fate998

(Sorry I don't know how too edit, I've been lurking the thread but never posted)
Here's another screen, and the "mode" is called mode 6..?

Rsniper4

Consider inspecting your catalytic converter. A faulty cat tends to result in fluctuating rich/lean maf readings.
If cat is fine, next place to look would be spark plugs.

fate998

I never checked my plugs, pulled them to find them soaked in oil, I was told to replace the crank breather check valve (which is technically a pcv isn't it?) so I should have that Monday and I'm praying it fixes it, havnt checks my cat yet because I have no access to it, it's all welded

fate998

I really hope this does it

Rsniper4

Hmm, if the entire plug is soaked in oil, then oil might be leaking from the valve cover gasket. Do you have the means to take the valve cover off and check?
Can you describe the spark plugs in more detail, and maybe post pics?

You might also try contacting a local independent audi service about this issue, and if they are not busy they might be able to give you some free advice over the phone.

fate998

Yeah I can, but last time I replaced it I did a coat of black rtv on the top of the gasket before putting the cover on,( someone else told me this was wrong later I'm not sure) but I can if I have too, I replaced the "crank breather check valve" one of the many names, and it's much better, but under acceleration I'm still gettin. The "burp" it's almost like a misfire, I'm wondering if one of my coils failed from the oil?

All and all I do pretty well myself for a girl, but I'm really lost on this, I can change any parts, I've just never been great with diagnosis, until I've had experience with something then I could do it a million times or know instantly if it fails . But this is my only vehicle I'm quite desperate to figure this out, this did all start after replacing my diverter valve.... If that's any help

fate998

And I checked when I replaced the spark plugs, there's no trails coming from the valve cover Seam in the plug holes

Rsniper4

Any smoke coming from the exhaust? There are quite a few ways that oil can get into the combustion chamber, such as a damaged head gasket or piston rings.
It is also possible that a faulty ignition coil can cause misfire. Unfortunately I don't have much experience diagnosing electrical problems. This site may be helpful https://www.reference.com/vehicles/s...8991c6beaa5d79