A little bit info on the topic.
Replaced the air filter (old one was shockingly dirty, almost black from oil fumes)
Stupid me believed the old owner when he said serviced the car before selling it to me so I didn't check the filter then but I did luckily replaced the oil)
Cleaned the pipe from air filter housing to turbo at least as much as I could reach, didn't remove the bugger cause it is way down to turbo)
Cleaned the smaller pipe that goes from air filter pipe to cam cover, it was pretty dirty inside.
Cleaned the air filter housing and MAF with CarbCleaner, luckily MAF resumed to operate normally although I heard some members had probems after cleaning it.
Cleaned the small bore vacum pipe that aaronjb mentioned. Pipe is ok.
Didn't clean the egr or turbo diesel part since the weather looked it was going to rain (have nowhere to work except public parking lot
).
Must note I was dirty as hell.
I shoulld write to Discovery channel about that show "Dirty Jobs" to try to clean tractor mig parts, they could get surprised
Anyway after all this also I must note one strange thing
Before when the car was in Neutral it was consuming 1.0-1,1 litres per hour (trip comp) and 1.5 litres in Drive.
After doing all this not in Neutral it doesn't drop bellow 1.1 but in Drive it stays at 1.4
A bit strange
