My engine will not start and I believe the fuel injectors are not opening. My dad removed them and tested them and found out the the injector is not opening and allowing the fuel to pass throught.

The injectors are 30lb for and the PCM has been reprogrammed.

The engine does not have the Alternator on it, it is running off battery power only and every injector is hooked up.

Is there a ground wire or something that I am missing. I have checked all relays and fuses. I have also just installed an adjustable fuel regulator and it has 48lbs if fuel pressure. Fuel is getting to the injectors, just not through them.

any suggestions

 

are you getting the injector pulse to them?

 

I am getting power, but i dont know if they are getting pulse.

 

Few thoughts:

-SES light / SECURITY light / Diagnostic trouble codes?
-Do you have spark?

There are two fuel injector fuses in the underhood fuse box. These supply +12vdc to the injectors with the key on. Four injectors powered by each fuse. The PCM decides when to ground out the circuit, and thus fire the injectors. If you have power to the injector, the fuses should be good, but might double check them nonetheless.

You might be able to pick up a 'noid' light from a local Autozone or NAPA, which you install into the injector's electrical connector. It should flash when you crank the engine over. If it doesn't flash, you know the injectors are not firing. Alternatively, you could take off the coil wire, pull the fuel rail up and visually check that they are firing as someone else cranks the engine.

If your optical sensor within the optispark is failing, or if there is a fault in the wiring to the PCM, the fuel injectors will not fire. In my case, it doesn't always throw a diagnostic trouble code for high/low-res signal loss, even though it should. So, you could at least test to make sure the wiring is ok up to the PCM, and you might end up needing a new optispark.

Additionally, if you have a SECURITY light on the dash, it might be a VATS related issue. Though, this would theoretically kill the starter as well. There are still tests you can do.

Do you have a voltmeter? If you don't, I think it'd be worth $20 to go get one and run some basic tests.

 

Confusing post.

If he removed them and tested them, can we assume that he was not using the PCM while testing them? That would rule out the issues related to the fuses and Opti, etc.

How did he test them externally? Did he measure the resistance of each injector to see if they are within spec? Were they in the range of 12-16 ohms? How did he determine while testing them that they would not allow fuel to pass? Did he apply +12V and ground? At first you say he "tested them" (plural), and then you say "the injector is not opening" (singular). How many injectors are not passing fuel when removed from the engine?

Not trying to nit-pick your composition.... just trying to understand what was done and how many are having the problem.

And.... moving to the "Fuel and Ignition" forum.