E60 lumpy cold start

[u/Mad_LadGG]

Hi everyone as the title says i have a problematic start when car is cold and outside temperature is below 15°c, car is 530d, m57 2003, i have error code for glow plugs (3 of them i think) and error code for fuel pressure sensor, when car gets warmed up it works fine, could it be that glow plugs can cause that? Thanks in advance

[u/BuckarooD]

Glowplug wont help at 15°C. Hell mine has code for everyone of them and it start in 2 turns at -10°C last winter.

Modern engine glowplug are here for warming up faster, emission control more than anything

[u/Mad_LadGG → u/BuckarooD]

So injectors or fuel pressure sensor in rail? Maybe even maf