Brittifoorumilta löytyi jonkun Hdi-mekaanikon postaus vastaaviin oireisiin, eli liittyisi tuohon hiukkaspolttoon.
"During regen the car bypasses the intercooler. It does this by closing the top doser valve and opening the bottom valve. Your cars are closing the top valve but not opening the bottom. This chokes the car of air and to prevent stalling opens and closes the top doser. The car will rev up and down from 500 to 1500 rpm on idle and give out bursts of smoke from exhaust. it will also lack power and chug alot until it hits higher revs. The 3 things that can cause this is the bottom doser is broken (ie flaps about loose when hose is removed), the second is a vacuum problem ie leak from pipe etc and the third is a faulty solenoid which is at the bottom left on front of engine, 2 bolted togeather and they are both brown, i think the bottom doser is the back solenoid next block, i cant remember. If you pull vacuum pipe off top doser when the car is idling erratically it should let it idle smooth."
Top doser ja bottom doser, mitä nuo mahtaa olla?
Edit:
Ovat ilmeisesti noita "potikoita" juuri ennen imusarjaa siinä haarakappaleessa. Näyttivät kovin öljyisiltä ulkopäin. Pitää huomenna ottaa koko kikkare irti ja putsata ja samalla käydä niiden alipaineletkut läpi halkeamien varalta. Sitä ac-pumpun kyljessä olevaa solenoidia (?) ei varmaan pystyne putsaamaan...?