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How do you know when the fuel injector goes bad on a 1997 Mazda Protege?

In: Mazda Protege [Edit categories]

Answer:

there is a certain tool that will detect a small vibration. check each injector with this. no detection will determine the faulty injector

no it wont tell you. take a long screw driver, and put the metal end on the top of the injector with the engine running. if you hear a small clicking noise, then it is working properly. make sure you check all 4 injectors

First answer by Manualanimal. Last edit by Manualanimal. Contributor trust: 152 [recommend contributor ]. Question popularity: 60 [recommend question].

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