Injector testing

[VERMotorsports]

Hi guys, I just watched this two webinars a couple of times now,
https://www.motec.com.au/training/ECU%20Initial%20Setup:%20Ignition%20%26%20Injectors
https://www.motec.com.au/training/Part%206:%20Initial%20Setup%20Workbook%20-%20Injector%20Configuration

and I can't seem to get to test the injectors, I select the fuel primary test, set the injector for #2 and ask for 2000 rpm.

I can't get the injector to physically pulse, I want it to activate it and hear it.
The M1 tune says its all good, I get the diagnostics that pin is ok, injectors are ok, etc etc, but I can't get them to pulse. How do I do that from the M1?

[Stephen Dean]

Hi,

If you try a lower test sped, what happens? Is the Fuel Injector Primary Duty Cycle reporting a value? Are the injectors powered at this time?

[VERMotorsports]

Hi,

If you try a lower test sped, what happens? Is the Fuel Injector Primary Duty Cycle reporting a value? Are the injectors powered at this time?

Injectors are powered at all times during tests, I will try lower RPM I'm going to the shop where the rally car is today to test again.

I will just leave the package here to share, car use to run fine in all 4 cyl, but from one moment to the other it just started failing in 3cyl, and we can't get the injector #2 to pulse, doesn't even send the pulse to the connector, if we test the connector the ground pulse never comes.

I will have more info later today

[VERMotorsports]

Just adding a screenshot, btw if we disconnect the connectors for any injector, I still get the OK in green for the primary pin diagnostic, that cant be right

[Stephen Dean]

Hi,

I loaded your configuration into and M130 on my test bench and it ran the injector test correctly, using a variety of speeds.

When you run the test, is the Fuel Cylinder x Primary Output Cycle Count incrementing?

[David Ferguson]

Any chance your injectors are connected to the wrong pin?

[VERMotorsports]

Injectors are wired right as far I can tell using a multi-meter and chasing wires, we managed to test it like follows, since cil2 is misfiring, we connected an external injector to the connector, and got it pulsing, so I figured it workings, just doesn't want to work in test mode.

Now I found out that even though its a wasted spark system, its firing right for cil1-4 but the 2-3 is having issues, the #2 coil isn't firing at the right time, which is weird since its supposed to fire at the same time as #3.

This car is making me crazy, diagnostic tests don't give back the right results yet stuff seems to fail.

Same story as the injector, if you run the car and pull the spark plugs cables out, both #2-3 have spark, but seems like its not firing at the right time. I will try to upload a log, we are in a hurry, tomorrow the car needs to leave for the first race of the year, and I can't get it to run in 4cyl properly for the time being.

BTW using the osciloscope we found out the ignition output for #2-3 is missing a cycle

PS: Let me add some more info, so I chased the wires for ignition, in the cfg its output 1-2-3-4 for ignition, yet on the back side of the 34pin connector, I found that the 1-4 outputs are wired together, and the 2-3 the same, don't know why someone would do that, instead of just wiring the 1 and 2 and put in the cfg both cil1-4 as output 1 and 2-3 as output 3.

Also since the coil doesn't have a driver, who ever wired this is using the OEM ECU as a ignition driver module, what a piece of....
Is it possible to use a coil without an integrated ignition driver on the M130??
If not, can I use any ignition driver with it?

[Stephen Dean]

Some OEM ECU's will have integrated IGBT's for the Ignition outputs.

You can use any external ignitor for the coils.