Ok so the situation is, as the title says, I have no fuel past my injectors...

95 s14
Rb20 swapped (no modifactions that should cause this problem, but here they are)
Aftermarket intake manifold
Walbro 255.
Yellow top in trunk, 2 grounds on battery cable (just in case).

The car cranks on its own. Will fire and run off of ether.
I have spark on all six plugs.
I have swapped the CAS to a known good one. I have swapped ECU's around, Swapped injectors to known good ones. I have checked for 12v.pos to the injectors. I have fuel passing through the rail. I have swapped the fuel lines back and fourth just in case, and have set them back to the way they should be.. fill to the back and return to the front. I have also tried with the MAF plugged in and un-plugged. I have cleaned up the grounds for the coil pack controller and grounds at the intake manifold.

Tomorrow I will be checking for ECU controlled ground on the injectors.

This swap is one I bought from JDM tech. The car had an RB20 in it before, but I through a rod and just descided to buy the whole " new swap"

If anyone can think of something I may have missed, please let me know...

 

Also, I have a code 43 at the ECU under the 2 setting.. not sure why I cant get the ECU to code out on the DIAG #3 section but...either way 43 is for Throttle Position Circuit...

 

Fuel pressure regulator? Vacuum to it?

I forget what its called but did you try a diode on the injector plugs to see if they're trowing a pulse?

 

Stock fuel rail with vaccum supplied to both regulators. Im going to try and check for the electrical pulse on the injectors after work today. I have the 12v+ to the injectors, but i havent checked for the ground pulse yet. Im strongly thinking that this is the problem, at this point.

The ground (pulse) supplied by the ecu to control the injectors.. is that able to be by-passed any way that would allow for the engine to run? ...second thought is probably not due to the need to control fire on timing.

Does anyone know where the ECCS is actually located for the RB20?

 

given everything you've said, that's gotta be the problem.
Some kind of wiring issue more than likely. something simple to overlook when doing the swap.

you're right, can't be bypassed. that's how the injectors work. It is either correct, or it isn't. Same way the coil works. It won't fire unless it gets that signal.

wait... are you asking where the ECU is?

 

As of late last night..

I rewired the car with a different ecu harness due to damage to the blue ecu connector that I thought could have caused some bad connections. All wires were soldered and shrink wrapped. Car is in now the same condition but with a little plus.

Currently:
With a noid tester I now have pulse on the injectors harness. I removed the CAS and have clicking to the injectors. I replaced the two green relays by the ECU and have clicking there as well.

There is still no fuel past the injectors themselves.

I have one wire that is not connected on the ECU and it was not connected when the old RB was in the car. It is pin 58 power supply. I have power to all the places I "should" have power. Fuel pump and relay, inj. harness. ECU, CAS, and Spark system.

Also at this point I cannot test my ECU in position 3 just 2. And it contiues to put out a code 43,for throttle position circuit. I have done research and found that this will NOT cause the car to NOT start.

 

When you say you have fuel pressure, how much is it exactly? Low fuel pressure can cause issues as well.

 

I dont have a guaged FPR on there. My system consists of an off the shelf in line filter from Discount, Walbro 255 and the stock rail with stock FPRs. I have good recircualting pressure as you can hear it buzzing through the rail. Ill try to pull the inline filter just to check if that could be it..

 

Fuel filter removed from the system.. Still no bueno. Hard wiried the 12v battery supply wire that was not hooked up from the ECU and no change... I know that I have 12v+ and pulsing ground at the injectors. CAS fires(clicks) the injectors when you remove it and spin it by hand. Yet it still seems as though the injectors are not opening to send fuel to the combustion chamber. Cant believe after three months im so close but still cant get the car to run on its own.

 

I'm not familiar with RB's at all, but is it possible to pull the entire rail with injectors intact? If you could pull the rail, leave the fuel lines hooked up and rotate the CAS to kick injectors to see if youre getting anything at all.

I know this may be a stupid question but, it can happen, do you have the filtered fuel feeding the rail? FPR should be on the exiting side of it as well.