Mine is at 10*F with new nozzles and Valve adjustment, Hmm... That reminds me i need to change my GP ,

first crank 2 cylindes will start firing, 5-6 second later 3 cylinders will be firing, about 3 seconds later 4 cylinders is firing, than it runs like crap about 3 second then all 5 cylinders fires up, this is what i am experiencing every time when it drops near single digit numbers...By the way i love it when diesel struggles to start but i hate it if it can't start ...

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi