Still having the same issues even trying this. By pump pressure regulator, do you mean fuel pump? Forgive my lack of knowledge on the subject.

 

Turn the key on and let it sit a few seconds.. then try.. or do as they suggested; just do not do it fast; the point is to try and see if its a priming issue (loss of fuel pressure at the injectors)

And yes they are talking about fuel pump.

 

since the rotation of the engine is at normal speed, with no lugging, hesitation, or clicking noises, then as said - there is no problem with battery or starter. the only purpose of the starter is to spin the engine.

if the engine is reluctant to start running, then you have a fuel or spark or sensor problem going on.

when you first turn the key to on, the fuel pump will cycle on. by turning the key on and off a few times before trying to start, you cycle the pump several times and if the pump is a little weak, that'll build up pressure.

another easy experiment is to lightly press the gas pedal when trying to start it. this opens up the throttle plate and allows air in through the main body, rather than just around the IAC air port. if that helps, clean the throttle body and IAC.

the next few steps of troubleshooting:
check fuel pressure with a gauge. should be about 49 psi, +/- 5.
if not recently tuned up, then replace spark plugs, dist cap, and rotor button.

engine is just a big air pump.
it needs fuel and air, compression, spark, and timing.

 

Let me rephrase: I did as they asked in the previous post and it still experiences the same issues in the morning. Even with leaving the key on for about 5 seconds, the truck still seems to take longer than normal to start up.

 

My 96 does the same thing. When It's been sitting a while it just takes a little longer to start. About 10 seconds or so then I turn the ignition off and it starts in about 5 seconds after that. It always starts though so I haven't been too worried about it. I'd check the furl pressure and see what its reading on initial crank up and go from there.