R33 Gtr - No Injector Pulse

[Piotr87]

Hello to all i have rb26 single turbo link g4 teling us is no injectors pulse on it but i went to the garrage where car is done and  car start up with no rooblem after day car did same again any one know 

[GTSBoy]

The Link is telling lies then?

[Piotr87]

I check my self and i use little flash lights on injector plug there is no power no flashing i swap cas and lights start flashing i start up the car morden 10 times with no problem after 1h same story no light on flash lights and i do not have qlue what is going on 

I didynt see foult code thats was on the dyno i was oway i ben told that from the garage whou do my car 

[Piotr87]

What i should check first can some one tell me step by step for incase if garage wont to charge me for job with is easy to fixt please for advice 

[GTSBoy]

Really, no-one can solve this for you across the internet.  Your problem is either in the ECU, or it is in the wiring.  Do you know how to use a multimeter?

[Piotr87]

I use multimeter just to check the conection between ecu and injectors and looks like no any wire snap or something like that 

[Piotr87]

And i didynt check for voltage 

[GTSBoy]

So, now you need to use the wiring diagrams and the multimeter to look for where the power is coming to, where the earth is (usually through the ECU's injector pin) and make sure there's power where there is supposed to be and no other wiring problems.  If there is no pulse, then the ECU is the likely culprit.

[Piotr87]

Ok thanks for advice i will go remove loom tommorow and i will take another loom to mach all connection only my consern is my existing loom is made up to r34 gt with rb26 and i thing will be notstright forward 

[GTSBoy]

Keep in mind that injectors are fairly simple.  12v goes in one side and the ECU earths the other side.

[Piotr87]

When i check last time on ecu plug was 6 wire positiv and ground go to 2 slots in ecu that like should ?

[GTSBoy]

13 minutes ago, Piotr87 said:

When i check last time on ecu plug was 6 wire positiv and ground go to 2 slots in ecu that like should ?

Ooh.  Yuck! Group fire.  That means that the ECU is firing 3 injectors at the same time, then the other 3, then the original 3, etc etc.  A bit shitty.  Does the ECU not have enough drivers for sequential injection?

At least that means that there only needs to be 2 injector drivers failed in the ECU to explain the fault.

Of course, it could be a configurational fault, in that maybe the injectors are switched off or something.  But you said that the car ran at some point then wouldn't run.  So it sounds like not a configuration problem.

You need to disconnect the at least one set (3) of the injectors at the ECU and simply put your noid light direct onto the ECU terminal.  Of course with 12v connected to the other side of the noid light.  If you get no pulse at the ECU itself, then it's not even trying to fire the injectors.

[Piotr87]

Im not to good to do that sort of work but i will try to sort out what you thing is anypoint to remove loom to check condition of the wire ?

[GTSBoy]

You can't really learn anything by pulling out the loom except that it won't work at all while it is out.  Sometimes pulling the plugs apart and putting them back together makes a bad connection good again.  Of course, sometimes it makes a good connection bad.

The reality is that you either don't have power or you don't have the ECU providing ground at the injector.  It's either bad wires or a bad ECU.

[Piotr87]

I have to remove wire tuning specjalist from mapping told as the wire is snapt some where and need to be replace o  need to be fixt i canot find any one whou wont to do loom for my car where is all engine and chase components pluged in