Is there a way to test if a fuel injector or its circuitry is going bad? Thanks in advance.

 

the injector ends are just little harness/clips, unclip one of them and take a look at it and see if you see any cxorrosion, if you do it mnight be time to start changing them all

 

Check all injector resistances are they >12.4 ohms <14.0 ohms. Do a power balance test with Consult.

 

yeah test the resistance of the injectors, that'll let you know if one is blown.

You can also diable an injector while the engine is running (but only for a second) and then plug it back in. If you dont notice a considerable drop in rpms then there is something wrong with the injector. the rear bank of injectors is a bit harder to do because of the connector is for all three injectors. I made a test wire set up where i could disable an individual injector in the rear. but be carful because the injectors are switched through their ground and the +12v is always on! so you definitly dont want to short out the ecm.

but definitly go for the power balance test at the dealership thats the best way to go.