[HSPRZEPA]

Any idea why my two injector channels (1 & 2) are executing simultaneously? I’m using the D17 trigger pattern.

https://youtube.com/shorts/3gYypigQv4g? ... vpfN01GqJo


Few things:
1) after seeing this, I ensured continuity was isolated for each injector. (Between the idc40 connector and the ecu pin out) I thought maybe I was shorting between the injector channels.-but I concluded this was not the case.

2) I tested the leds, and confirmed they can be lit independently.

3) im not having this issue with the spark plugs.

To me it looks like I have hooked up 1/2 & 2/2 for the same channel? Let me know what you think!

Thanks!

[jonbill]

Have you got simultaneous injection configured in the tune? Please share the tune (.msq file)

[HSPRZEPA]

Attached. Thanks!

[jonbill]

Tune looks reasonable. But the video looks like you're using the hardware test function rather than using an engine.
I'm not sure what the expected behaviour is in hardware test mode.
What board is it? 0.4?

[HSPRZEPA]

Yup, 0.4.3d. Yes. I’m using the hardware test mode. Engine wont start. Will send video later, but I have dash power, fuel pressure, etc. however during starter crank neither my ignition nor injector leds flash whatsoever. All my sensors give reasonable readings, and most importantly crank position. (RPM gauge in tuner studio works as expected during starter crank) “In sync” light also displays green during crank.

Are you suggesting the fuel injector input during hardware testing is a consequence of hardware testing?
Thanks!

[jonbill]

A log is more useful than a video.
Hardware testing is isn't the same software path as trying to start an engine, so how the lights flash in hardware test mode is just indicative of how the hardware test mode software works.
So the real problem is you have no ignition or injection when cranking?
A log would be very helpful.

[HSPRZEPA]

Log attached along with video which shows the injectors fire simultaneously.

https://youtube.com/shorts/02HCap4yMvI? ... 1PST17r-tA

Thanks!

[digmorepaka]

Log attached along with video which shows the injectors fire simultaneously.

https://youtube.com/shorts/02HCap4yMvI? ... 1PST17r-tA

Thanks!

Looks like it's doing what it should be doing. Your injector layout is configured to paired so only the first two channels are in use. I would start diagnostics by verifying if you wired your firing order correctly and then trying to spray some brake clean into the intake to see if you have a functional ignition and just a fuel delivery issue.

[HSPRZEPA]

Thanks for clarifying that! My wiring is as follows:

My engine firing order is: 1,3,4,2

Speeduino Injector #1-1/2 <-> Cylinder 1
Speeduino Injector #2-1/2 <-> Cylinder 3
Speeduino Injector #3-1/2 <-> Cylinder 4
Speeduino Injector #4-1/2 <-> Cylinder 2

I do not use any of the "2/2". I do not have a cam position input. Which config should I use?

[HSPRZEPA]

Upon doing more research, it appears that I have no choice but to re-wire my injector inputs into a two-channel configuration, where:

Speeduino Injector #1 1/2 <-> Cylinder 1
Speeduino Injector #1 2/2 <-> Cylinder 3
Speeduino Injector #2 1/2 <-> Cylinder 4
Speeduino Injector #2 2/2 <-> Cylinder 2

and run my current "paired" injector setting.