1995 Dodge Ram will not start when cold

If the problem happens only when the engine is cold, do your testing when engine is cold. Use a gage and check proper fuel pressure when cold, if no pressure release system on this, check that the pressure will hold for a bit, with everything off. Also, check for fuel injector pulse when problem is ongoing.

Have you checked for applicable trouble codes? You may be able to get some codes from the mil lamp on the dash. To get codes, turn key just till dash lites come on, no further. Cycle key, on--off, on--off, on, then the mil lamp on the dash start flashing, you count the flashes to get the codes. Your looking for two digit codes.

With engine cranking, the systems get battery vo9ltage, with the engine running, the systems get alternator voltage, there can be several volt difference.