Hi Guys, still chasing what seems like a never ending list of issues with my car.
Car is an 06 TbSti.
Main issue I'm struggling with at the moment is shortly after starting my car it appears to loose a cylinder for a while (at least that's what it sounds like) but after maybe 1 minute it sorts itself out and starts to idle smoothly again. A quick stab of the throttle usually clears the idle up too. This only happens when the car has been sitting for long enough to cool down completely. If I allow the car a few minutes to warm up before I leave it drives fine but if I leave straight after starting the car runs so poorly that it is barely able to accelerate for the first minute or so, especially if I'm gentle on the pedal. It also occasionally starts to feel like its lost a cylinder if I spend a couple of minutes cruising at a consistent speed (60km/h in 4th gear usually does it). When it does this dropping to third clears it up again and its usually fine from then on.
Whilst chasing other problems I have replaced Spark plugs, Coils, MAF and the Front 02 sensor so that should all be working properly. Have also had the injectors cleaned and tested and they are all good.
I've also cleaned out the main engine wiring connector (the large one on the passenger side with the big lever on it) and the other plug that lives under the intercooler (not sure what this one does, but mine constantly fills itself with oil. Does this happen to anyone else?). Fairly sure I don't have any vacuum leaks. I've run a fuel pressure gauge on the car and that appears to be fine. The car isn't using an unusual amount of oil, the coolant still looks nice and clean and there's no smoke from the exhaust.
Aside from this problem, the engine feels healthy and pulls well when under power and has no trouble right through the rev range when I'm giving it a bit.
I have a Vag-Com cable and Rom raider setup. I couldn't get it to talk this morning but once I work that out again I should be able to log whatever is needed.
Is there a way to tell which cylinder it is that's giving me grief? Not really keen to try and unplug coils while the engine is running for obvious reasons. I feel like its an electrical problem, but at the same time it seems to be so consistent in timing it has me wondering if its actually something else?