D5 starts badly

Hello I’m used to a lot of things from the old TDI. there were startorgies up to the wave. my d5 seems to be ticking something at the moment, although I’m not very, how bad THAT is. usually it’s preheated – then understandably there’s no problem. however, I start it like just at -10°, all night standing in the snow – he is ticking, and indeed I pre-heated three times and then started (~5sec). sometimes something shrugged, like a cylinder – at the fourth try it went now the thing would not be bad for me at all, if I had in mind not the story with the nozzles. can jeman calm me down or make me aware whether my current experiences can be explained with bad nozzles ? or are it u u. only the glowing pencils ? otherwise there are no problems, even with around the NULL just impeccable. normal and thoughtless or should I make myself thoughts ? thank you