i got a 95 blazer 4x4 and i got the same problem, i cant figure it out either.
.. mine will start but it takes like 5 times to get her going. only when cold.
i changed coolant temp sen. all new ingintion (coil, ing mod, wires, dist, cam sen, cap and rotor,).
this started just after i fixed my fuel line leaks in the intake.
after its warm it starts right up.. i don't get it either. it runs great no a missfire or anything. purrs like a kitten and it will start every time when its warm.
i was getting a heater o2 malfunction so i changed them.. it did nothing. just a waist of money..
i have no check engine lights all new sensors, all new ingintion.
to me it seams that a sensor it not letting it get fuel when its cold. i just dont know witch one controls that. i thought it would be the o2 cutting fuel cause of heater issue.
if i find out what it is i deffently spread my wisdom. or if anyone else can help us on this problem would be sweet...
i have 62psi on first prime. and it holds it. but still no start. i know u said that it was 44psi. that's kinda low.
have u changed your fuel filter lately... i changed mine and got 5psi more. but it didn't help with my cold staring thou .