No combustion in cylinder 3

Hello guys. I’ve got an e46 318i with the m43 tu motor 118ps. The car has got a overhauled cylinder head. Everything perfect until then. Since then I have the problem that the car has times on the 1 cylinder ( ignition stop ) times on the 3 cylinder ( combustion stop ). I measured the compression all 14 bar. The seals from the injection nozzles replaced, because if one sprays on the first injection nozzles brake cleaner on it, the idle run has changed. After the exchange of the rings still so. Spark plugs are replaced. I ignition cables are in order. I also switched ignition boxes. Currently I have the problem that the on the 3 cylinder does not inject. I pull the plug from the said cylinder and it does not change anything. What can this be? On the cables is tension there. I also changed the nozzles across but that did not bring anything.