Hello, just set up the MZ ES 150 from my girlfriend again. I slowly despair about the mixture. I will describe the symptoms here exactly…and need qualified hints. Kern oneliners like “FALSCHLUFT!!!111” do not bring me any further… And indeed, it was originally totally distorted and ran only on Choke and with push until it did not run at all. Batteries killed her. I want to get her back on the road and in the course of the a lot of things have already been done, even at the electrics – I don’t get any closer now, since the ignition seems OK. Ignition spark is there and it is also running… only extremely wrong. Mechanical controller was replaced by an electronic one so that it does not always discharge the batteries deeply. (It also works). To the mixture: So I first removed the carburettor, completely cleaned, checked all nozzles and renewed. Again screwed on, and see: It ran at the first kick. Gi But after a few seconds the carburettor was not set yet. So far, so good. At that time we recorded this, here is the video:https://photos.app.goo.gl/qtGGvkr2RCHB8Uzs7 A few weeks after the attempt the box stood, because we have no time to screw. And then the horror started. We only got it when we turned the spark plug out and put a few ml of fuel directly into the ignition chamber. It remained on, but continued to pull out the carburettor. The adjustment screws on the carburettor did not have any effect. Nor did the needle position. I checked the carburettor again, set the float and let two car masters look over it, both of which say the carburettor looks great. Then I found that the box runs when I take off the air filter and take the air almost completely with my hand or the like. If I allow a minimum of more air, the engine pulls up immediately. To make it a little lighter I have made an attachment to do it and not to have to regulate the speed with a finger movement. Thus the box starts super. the 24 diameter intake flange I have with it throttled on pin head size. (see picture)https://photos.app.goo.gl/8WFcG3DqjzEx183F7 So the following picture: Speed accelerates continuously to the very top. Still no noticeable adjustment possibility by speed/mixing screw/part load needle. When I give gas, the speed r If I don’t stop in time, I stop the air completely, it goes out. I made a video for this, see here: I first had false air in the suspicion. Cylinder foot seal and insulating flange renewed. False air test results: No false air on cylinder foot, head, manifold, intake flange. A nice guy on Facebook thinks that the shaft seal could have given up the mind and thus she could have false air from the drive But then I would ask myself: Why does it go out when I completely “turn off” the air on the carburetor? You would have to get enough wrong air or not? So I have the feeling that it may not be the wrong air, but I am at the end with my Latin. My feeling is, maybe try a whole new carburetor to definitely exclude it… the carburetor was made a lot, a new partial load needle (the RIGHT one, the previous one was a lot small) he) as well as controlling the spraying… My thought is, if she doesn’t get too much air, then maybe too little fuel? On the other hand, it speaks again that she still raises the speed so high…https://photos.app.goo.gl/vnYXAtgBkGtxSYdc6