Let me add my 2 cents. It has been extremely cold here in the NE this month and both my SDs are exhibiting the same behaivor. First thing in the morning they are difficult to start unless I use the block heater. New batteries, new glow plugs, PS anti gel, glow for 3 or 4 full 45 sec cycles (I hear the relay click), start great when warm. The 84 has some fuel seepage around the injectors, and the hand pump on the 83 isn't the best, so maybe that is the reason. Or, maybe the PCs are all schmutzed up so that the GPs can't really do their job, either way nothng gets worked on until stuff starts to thaw out and I can walk outside without hearing crunching sounds.

Here is my morning starting regimen, glow for 4 full 45 sec cycles, start to crank and feed fuel gently until it starts to fire. Keep starter engaged until engine sounds like it will run without it. This is working down to the single digits, anything lower and it has to be plugged in.

I tried using the instructions in the owners manual, didn't work at all.