Injector testing with techstream advice needed

[Martyt3x]

Hi, can anyone with techstream advise me what parameters I should be looking for on techstream to check my injectors? 1ad-ftv engine with first start problems, also what sensors to monitor i.e., fuel rail pressure, fuel temperature etc... I have ordered techstream and lead which should be here tomorrow and I've used measuring blocks etc.. with vagcom before but without acceptable parameters and tolerances it's going to be more difficult to see what is working and what is not. Is there a health check on techstream? That scans and brings up any concerns? Thanks in advance 

[Martyt3x]

Ok I have had a test run with techstream the injection values stay relatively stable just not sure what they should be! 

[Devon Aygo]

Before starting the diag' process Toyota's own process says to update to the latest software this is done so as to ensure a software fault is not causing the fault, this will be relatively cheap so do this before replacing more parts! 

Individual injector feedback should be within +- 3.0mm3, so appear fine 

Inj FB volume for idle should be 3.2 to 10.1 mm³ for the 1AD, so is out of tolerance and Toyotas diag process says fit new style step 2 injectors as a set! do not mix step 1 & step 2 injectors. 

inj vol feed back learning should equal to or less than 1.8, so appears fine

Note all the figure above are to be read with the engine warmer than 65 degrees and with no load @ idle e.g AC off, electrics off

[Martyt3x]

2 hours ago, Devon Aygo said:

Before starting the diag' process Toyota's own process says to update to the latest software this is done so as to ensure a software fault is not causing the fault, this will be relatively cheap so do this before replacing more parts! 

Individual injector feedback should be within +- 3.0mm3, so appear fine 

Inj FB volume for idle should be 3.2 to 10.1 mm³ for the 1AD, so is out of tolerance and Toyotas diag process says fit new style step 2 injectors as a set! do not mix step 1 & step 2 injectors. 

inj vol feed back learning should equal to or less than 1.8, so appears fine

Note all the figure above are to be read with the engine warmer than 65 degrees and with no load @ idle e.g AC off, electrics off

So the injectors individualy are injecting ok, the volume is ok but the fb volume is too low? What would cause this? And what does fb mean? Is it flow back? Or feed back? I will run the test again tomorrow with the temperature up to  65 degrees and see what happens. 

[Martyt3x]

New cold start test attached taken after 10 seconds. I did record the actual start up but it crashed 😬 Note the fb volume for idle...