I have a 1981 300D non-turbo diesel. The injecters are 33x. That is what is stamped on them. Two of the injecters have different body configerations. Anyway, i recently installed a new set of nozzles from italy in them. It is using more fuel now, and a lot of smoke on start up. I was told, that the injecters in my car were for a turbo model, they were dumping to much fuel into the cylinders? I have called to different dealers and have to different answers. Are these the correct injecters or not? Thanks for any help!