Normally, I think I can fix almost everything on a car, but this one... Ok , please read and be surprised (ehrm... ok, I know...)...
I've tried everything... Ignition: Spark plugs - new Cables - new Distributor cap - new Distributor parts, all new..
Fuel: Injectors cleaned Wireing checked... Fuel pump, ok Fuel press., ok Lambda, ok
Air: New filter Hoses, ok AMM, ok Intercooler, ok Turbo, ok
Else: Normal temp. Oil consumption, ok - close to nothing. No bad noises... Enough power while coasting and accelleration... Fuel consumption, ok (according to user manual)
Once in a while the engine seems to stall, but catches up and runs ok again... No system in the "caughs". Very random. Warm engine and idle at factory settings. It's like a human flu... random caughs... A very mild smell of burned oil... Strange... Example: Red light at a crossing, and stopping, engine at idle, rough idle and a mild smell of burned oil...
Help!... Anyone...