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Since you mention "gas rail" I'm assuming fuel injected.
I'd check the fuel pressure in the rail. Should be around 40 PSI.
If pressure is OK then injectors not working. Time to check cps.
You know the spark side is OK since it will run.
You would put on a new crank sensor because the ignition system won't work, it gives no spark. So now do you have spark at a spark plug wire end? A blue consistent spark? Probably good ignition system, as long as all spark plugs get a spark.
One thing you always want to check with no start is the fuel pressure. Turning the key to on should turn the fuel pump on and put pressure in the fuel rail at the engine. Autozone and maybe others rent or loan fuel pressure gauges. Multi-port injection systems have high pressure specifications, around 40 psi normally. That is what the injectors require to spray out fuel when they pulse and open the nozzles.
With the injector circuit, the first thing to check is if each injector has power to it with the key in ON. One power wire and one ground wire goes to each injector. The power wire is from a fuse that is powered with key on or key in start, and then it is spliced to all of the injectors. The injector grounds all run into the engine computer, where the circuit can be internally grounded for a split second and cause the injector to pulse. But anytime the key is on, the injectors have steady voltage available to them.
Check all fuses first, then with an assistant, check for spark with a spark tester. if there is spark at 2 plugs, check for fuel pressure at the fuel rail with a gauge. Engines need three things to run, fuel, spark, and compression. If there is spark and fuel, do a compression test, if the timing belt jumped/broke, you won't have any
Did you verify that you have proper fuel pressure? Should be around 60 PSI. If pressure is low, ensure that fuel filter is not installed backwards. If fuel pressure is OK, check your injectors with a noid light to see if you have injector pulse. If the truck starts with gas poured into the intake, it is NOT the spark plugs causing the problem. You are chasing a fuel delivery issue, NOT a spark issue.
u have good fuel PSI, have u had the emissions checked? cooling system/ sensors poss vacuum leak. Start with an emissions test (is it running lean or rich?} & scan the PC for readings of the sensors. That should be the route u take toward diagnose & repair.
I saw what you replaced, didn't see any testing? Any applicable trouble codes? Use a gage and check proper fuel pressure, TBI--9--13 psi. As an example, 5 psi fuel pressure makes a nice looking injector spray pattern, but, 5 psi won't start and run a v8. My opinion.
Could be other issues.
If you have to spray fluid into it then it sounds like the fuel presseure is not there, get a fuel pressure gauge and see what the pressure reading is, then leave it hooked up for what ever time it takes to not start, before you try to start it check the pressure, if it has dropped then your fuel injector/s or fuel regulator is leaking, crank the engine after taking the reading, the fuel pressure should come back, 60-66 PSI, Vent the fuel tank vapors by loosening the fuel cap.Position the ignition switch and the A/C system in the off position. Install a fuel pressure gauge to the vehicles fuel pressure valve. and with the keyon, engine off verify the PSI reading on the gauge.
Anything less than 60 psi and your fuel pump is weak
sounds like a bad ignition module if your pressure reads out good, if you have spark and no start it most likely is this since it takes the signal from the distributor and sends it to the injectors and the spark coil get a reading on that pressure first though