Hello community, it’s about a Fiat Punto – BJ 2010 – engine code 169A4000 a well-known.Previous story: – 3 weeks ago timing belts change completely at a workshop According to the owner, after changing the errors occurred (but I doubt it). – 2 weeks ago then due to the error the ignition coil (combist) and all 4 candles were changed by a workshop – 4 days ago was then changed by another workshop again coil with candles. h undefinable driving time and regardless of the load condition the MKL goes on. However, this goes out directly again – but what remains is the warning triangle at the speedometer. As soon as the MKL appears you notice significant power loss. After a further 2-3 minutes the engine then runs like a sack of nuts. Then when the error occurred times after the row the spark plugs off. Cylinders 1 and 4 run – Cylinders 2 and 3 not! As soon as you switch off the ignition and the engine restarts the engine runs like the one on all 4 cylinders. Error memory says: P0300 , P0302 and P0303 ! Have already read something about “ton wheel” learning?! I tried that today – no change. Now the question to the Fiat professionals – how is it best to limit the error? Cylinders 1 and 4 as well as cylinders 2 and 3 have the same work cycle, right? About your tips / help I would be very grateful because the owner has left the last few weeks really a lot of money in the workshop. would – timing belts be moved around a tooth? Say I would have to check the tax times, correct? Greetings and nice weekend I wish you, Michael