Engine starting problems

What was the pressure reading?

Roy

You said when you sprayed carb cleaner into the air filter, it did not start? It should for a couple of seconds.

None of this makes sense. You said you have spark, 70 lbs of fuel pressure. It should start.

Does the check engine light come on?

Roy

Check for spark?

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark?

No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing.

If there is no light, check the fuse for the pcm. It may not be giving any commands.

The pcm turns the injectors on and off based on inputs from other sensors.

Roy

Do below -determine what's missing fuel or spark then comeback

Do you have a check engine light On or flashing prior to this problem?

If the engine's condition is in tip top shape-do below to determine if its fuel or spark problem that's if its cranking over and refuses to start

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel problem, check the fuel pressure to rule out the fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil, distributor pick-up coil, ignition control module, cam and crank sensors-

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time

Sir
An EFI ( Electronic Fuel Injection )

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? Did you do this-if not best do it to determine if its fuel or spark then comeback for more assistance-

If it runs with either, then it isn't getting fuel. Since you have fuel pressure at the rail, check to see if the injectors are getting power.

Also, did you blow the water out of the fuel lines and rail?

Are you saying the pump won't even prime, when you turn on the key, no crank?

If your saying you have good spark at the plugs, during cranking and it's just a fuel pump issue, start at the fuel pump relay. One of those terminals at the relay, should be hot all the time, D1 terminal. If it isn't hot, go to the ecm B fuse, not only check the fuse, but, check that one of the fuse terminals is hot.

My information shows D1 and C3 terminals at the relay connector are for the switch side of the relay. You might doublecheck by looking at the diagram on the relay. If D1 is hot and you use a jumper to C3 from D1 at the socket, by the way you probably should use an inline fuse on the jumper, just in case, the pump should run like crazy, if it doesn't, there something wrong with the voltage circuit--- ground circuit or the pump.

It could be the computer isn't energizing the relay for some reason, but, even without the proper rotational signals, the pump should still prime at key on. That's how I see it.