How to test a fuel injector circuit with a noid light (a ScannerDanner Premium video)

This is a basic test that anyone can perform using a conventional test light. A noid light is nothing more than a light bulb designed to be plugged into a fuel injector harness connector. In this video we will discuss the following test results: - noid light flashes - noid light doesn't flash - noid light is lit all the time Engine Performance Diagnostics chapter 18 page 4 Tools used - injector noid light - incandescent test light - digital multimeter Playlist - (Chapters 17, 18 and 19) Fuel Injector Testing Related videos - How to test a fuel injector (open winding case study) Nissan - Stuck Open Fuel Injector (how to fix) - A free ScannerDanner Premium video (Fuel Injector Testing Part 1) - How to test a fuel injector circuit with basic tools (open control wire) - How to test fuel pressure, injector pulse and spark with basic tools For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

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Simple to use Noid Light to test fuel injector connector ~ checks for electrical pulse power
I bought this 9 PC Noid lights test kit on Ebay, it works on Ford, GM, and Geo car models. My car is a Ford Crown Victoria. There are fuel injectors on your car and they need to be spraying fuel into the cylinders. Every now and then, one or more fuel injectors won't spray because they are not either getting power or pulse signal from the PCM (Powertrain Control Module). When this happens you'll get a misfire condition and rough idle. This video is to show you how I use a Noid light test kit to troubleshoot fuel injector problems. A flashing light indicates normal pulses. No light or constant light indicates a problem. - If the Noid light flashes on and off then this indicates the fuel injector is getting power and that the fuel injection computer is providing a fuel injector pulse signal to activate it. Also, this test result eliminates the electrical end of the fuel injector circuit as the cause of the problem or misfire. - If the Noid light did not flash on and off, this result indicates the the fuel injector is either not getting power or that the fuel injection computer is not providing a fuel injector pulse signal to activate it. More specifics about this Noid light test kit: Quickly and easily tests electronic fuel injection systems on GM TBI, BOSCH PFI, FORD TBI GM PFI, GEO TBI, and GM SCPI, GM MULTEC 2, GM-1987, GM-1982 equipped vehicles. Instructions for Noid lights: Disconnect electrical harness from injector. Plug Noid lites into harness. Turn engine on. - If Noid light flashes, electrical system is OK. - A steady light or no light indicates malfunctioning electrical system. If problem persists, check fuel system.