I'm looking for any info about "basic adjustment of control piston in fuel distributor". I was checking sealing ring for control piston, but before taking it apart I didn't measure an exact position of closing plug. I know, now I have a problem. I did put it back together but something if off. Now my fuel mixture is rich and using a duty-cycle meter I can't get reading any higher that 39. Also car is hard to start when cold. My question is:"How can I put/set plunger properly? What is the way of doing it?"
I guess that I can keep playing with it but I would prefer more professional way.