When the injector doesn’t close properly, excess fuel may enter the combustion chamber, creating a strong fuel odor and potentially wasting fuel. Is that the best way to physically tell they are leaking Is that possible to do It seems pretty straight forward in that i loosen the wiring harness on top of the motor and then unbolt the fuel rail, lift up and pull the injectors free I was planning to put shop towels underneath each injector when i primed the pump to see if any fuel dripped. The resistance of the fuel injector coil windings will increase as the temperature of the fuel injector increases
Testing a leaking ‘spider’ fuel injector assembly or a leaking fuel pressure regulator (gm 4.3l, 5.0l, or 5.7l ) can seem impossible, since both of these bad boys are located inside the intake manifold's plenum but they can be tested and it's far easier than you think. In this video i demonstrate how to check and test for bad fuel injectors I show how to conduct a power balance test, test with a noid light and test with a multimeter. Read on to learn how to check for leaking fuel injectors to ensure your engine runs optimally and prevent fire outbreaks from external injector leaks and vacuum leaks.
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