Out of ideas
 

My 2002 Ford ranger 4.0L has a crank no start. I got 50 psi at fuel rail. I got spark from plugs. Changed crank sensor. Cam sensor is good. It will start when I spray starter fluid. But will not start on its own. Does anyone know any idea what's goin on or what's the next step I should take. Thanks

Is it throwing out any codes?

Nope. No codes

Is every fuel injector nozzle clogged?
Did you see if the 12 volt "daisy chain" is energized?
Each injector is powered by a common hot. They're grounded when the time comes to spritz.

Well when I shoot it with starting fluid it fires up and runs like it should until the starting fluid runs out. So I assumed they were all firing. I did check the hot wire on the injectors and they were good.

Your not getting fuel....You have a fuel issue.

Well here is an up date . I changed the coolant temperature sensor cause I was told that can make a crank no start but......that didn't fix my.problem either. Can anyone plz help me??

That vehicle has PATS.
Are you using a correct (chipped for your vehicle) key?
Make sure the "anti-theft light" illuminates when you turn the system ON.
You may have a light, but the bulb may be blown.

Even with gasoline sprayed into the cylinders, you need compression to fire an engine.
Check each cylinder's compression.
Remove all sparky-poos and shove a compression tester into each cylinder and crank the engine.
Get a helper if your particular gauge won't stay in the spark plug hole.
Top compression is 150-160 psi. Each cylinder might need 4-6 pulses to reach maximum.
Pulse each cylinder the same number of times. Wright down your findings.
Cylinder layout below.
3 6
2 5 (Driver's side)
1 4
Front of engine

I am using the same key that I've always used. But I did notice that sometimes when I go to try to start it. The theft light would be blinking rapidly. But I can turn ignition back and forth a few times and then the light would come on and go off Like it is supposed to.

Maybe your antenna ring is failing?

Also, is there a lot of bling (junk toys) on your key ring? That is a known source of interference.

Or around the key slot on the column?

No sir I just use the key by it's self.

A known good (used by you) key, good. Check the antenna ring now.

Is there a specific way to test the ring. All I know is that it's supposed to read the chip in the key. So how can I test to see if it's actually reading it??

I meant to mention...I saw a video. Some specific ohm measurement? Check for frayed / dry wires?

I know this is 3 weeks old, but did you check to see if the fuel pump safety swith needs reset? Passenger side front, just above carpet line. Push the button on top. I hit mine vacuuming one day and it wouldn't start. Had it towed home and finally found the switch.