Apex dumping fuel #3 cylinder

[ddm2016]

Hi guys, I’m working on my 06 apex, 3400 miles, I have put in new injectors, new pressure regulator, can’t figure out why on the number 3 injector it still dumps fuel in the throttle bodies and floods the motor, motor ran before I did exhaust donuts, now it won’t start. Installed a new battery which is fully charged, no codes coming up either. Not sure where else to look. Any ideas?

 

[pdiddy]

If it's not the injector itself it must be something telling it to stay on like the ECU or a wiring issue. Maybe you disturbed or pinched a wire during the exhaust donut job? Also just go through all the wiring connection points open and inspect, clean, and reconnect.

 

[steiner]

I would suspect the ECU. It grounds each injector to fire.

 

[ddm2016]

Okay, thanks, I’ll start looking at wiring.

 

[1nc 2000]

Swap injector with another cylinder and see if problem follows.

 

[ddm2016]

Swap injector with another cylinder and see if problem follows.

Great idea, I will try that, thanks.

 

[steiner]

Great idea, I will try that, thanks.

Did you not state that you already installed new injectors?

 

[ddm2016]

Did you not state that you already installed new injectors?

Yes I did, that’s why I’m tending to believe a faulty ground wire or ecu. I am in the process of installing a used wiring harness thay my friend and I just today removed from a running sled. That way I will definitely know if it’s electrical, and I also have his ecu to try with the new harness, it’s off from an 07, mine is an 06 which after searching, I believe they are interchangeable up to 2009 or 2010. I should know shortly. Also, grabbed his throttle bodies and injectors. We drove his sled into the garage before removing everything, so I know his wiring harness and ecu are good. I will know later tonight. Hopefully this works correctly.