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NEED Help making Electronic Fuel Injector Tester

Discussion in 'General Electronics Discussion' started by youredone82, Apr 10, 2014.

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  1. youredone82


    Apr 10, 2014
    Hey All,

    This is my first posting and I am excited to get some help with this as well as many other projects. What I am trying to build is a Electronic Fuel Injection tester similar to a OTC 3398 Pulse Tester. I dont know if your able to post links to items here so I just put the description. Basically It enables you to check cylinder balance by firing individual injectors I would like it to have a variable pulse width I know that's a potentiometer, and I think a 556 timer module would make the pulse I need. But basically what I want to have happen, is connect alligator clips to the vehicle battery, and allow me to activate each fuel injector (basically a solenoid at about 5-15 ohms) for a set period of time, the same exact time every time the test button is pushed, regardless of how long the button is held for. Maybe the timer module would have to count down for it to reset?
    it will be working on automotive systems, so 12v dc
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