Narrowed problem down

[2GSOCAL]

Ok, ive been having problems with my 90 awd since i rebuilt it. It was getting no fuel pressure, even after i installed a 255hp pump. so i bought the aeromotive afpr and i got the fuel pressure up with that to where it needs to be (around 37 psi). I took out all four spark plugs and hooked them up to the wire and cranked, and all four sparked off the body, i even took the fuel rail out with the injectors in it and put paper cups underneath them and they all squirted out even amounts of fuel. so i got fuel, spark, air(new K&N, now it has to be the timing, when i looked at the timing yesterday, it appeared off 2 teeth. would that be enough to prevent it from cranking? also a while ago i hooked jumper cables up wrong polarity and someone told me it might have switched the polarity in the some hardware in the ECU possibly? i dunno, also the fuel pump doesnt prime when i put the key to "ON" but when i turn the key to start it, the pressure jumps up to 37-40 psi, and stays, THEN when i let go of the key and it goes back to on (after not starting) the fuel pump then makes the noise and primes, (AFTER i let go of the key when it doesnt start) i got the relay hooked up exactly how its supposed to be @ vfaq.com (both walkthrus). Its getting power back there at relay post 30 at all time, even when engine is off, ### its hooked up to the battery post direct and fused. 87 gets power after i turn the key to "start" not on. so the pump doesnt prime at on, why might the pump not be recieving its power when i put it to on and why does it recieve the power to prime after i go to on from start? Sorry this is so long i just want to provide details to get the best help, thanks all always guys! Martin Gray

 

[Masochist]

Ok, ive been having problems with my 90 awd since i rebuilt it. It was getting no fuel pressure, even after i installed a 255hp pump. so i bought the aeromotive afpr and i got the fuel pressure up with that to where it needs to be (around 37 psi). I took out all four spark plugs and hooked them up to the wire and cranked, and all four sparked off the body, i even took the fuel rail out with the injectors in it and put paper cups underneath them and they all squirted out even amounts of fuel. so i got fuel, spark, air(new K&N, now it has to be the timing, when i looked at the timing yesterday, it appeared off 2 teeth. would that be enough to prevent it from cranking? also a while ago i hooked jumper cables up wrong polarity and someone told me it might have switched the polarity in the some hardware in the ECU possibly? i dunno, also the fuel pump doesnt prime when i put the key to "ON" but when i turn the key to start it, the pressure jumps up to 37-40 psi, and stays, THEN when i let go of the key and it goes back to on (after not starting) the fuel pump then makes the noise and primes, (AFTER i let go of the key when it doesnt start) i got the relay hooked up exactly how its supposed to be @ vfaq.com (both walkthrus). Its getting power back there at relay post 30 at all time, even when engine is off, ### its hooked up to the battery post direct and fused. 87 gets power after i turn the key to "start" not on. so the pump doesnt prime at on, why might the pump not be recieving its power when i put it to on and why does it recieve the power to prime after i go to on from start? Sorry this is so long i just want to provide details to get the best help, thanks all always guys! Martin Gray

What exactly is the problem?

"it appeared off 2 teeth. would that be enough to prevent it from cranking? "
So is it not cranking or not running? If its not cranking that has nothing to do with fuel, air , or spark. Those things are only needed to make it run, not crank.