How to troubleshoot injectors not pulsing?

2007 KIA SORENTO
185,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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BBAILEY42
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How to troubleshoot injectors not pulsing? Als the fusible link on positive term is callShould i still have something in pdc> theres 2 threaded holes with nothing there, I had found link for pos in glove box, I cant get clear answer, Thanks.
Apr 5, 2026 at 2:44 PM
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STRAILER
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Hello,

I can help you, so the first thig to do is test for 12 volts at the injectors with the key on, (orange wire). If you have power then you can have a bad crankshaft angle sensor. This guide can help as well.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Those holes you are pointing to do nothing so don't worry about that. If you plug a scanner in you should see the engine RPM while cranking, if not I would replace the crankshaft sensor which is on the transmission bellhousing, here is the location. Also, are you getting spark? This video can help test it.

https://www.youtube.com/watch?v=lXLJbuAZ4CE&t

Check out the images (below). Let us know what you find.



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Apr 6, 2026 at 9:53 AM