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Sunday, January 16, 2011

$20 fuel injector tester - Hack a Day

$20 fuel injector tester

posted Jan 16th 2011 1:00pm by Mike Szczys
filed under: tool hacks, transportation hacks

fuel-injector-tester

[Dino] is an auto mechanic and needed a way to test out fuel injectors. Commercially available tools start well over $100 and go up from there, but he built his own for about $20.

The injectors have a coil in them that needs to be tested. His design calls for a series of 0.008 millisecond pulses to test the coil. He started by setting up a 555 timer to output a one second pulse. This signal is fed into a second 555 chip that outputs the 0.008 pulses and in turn actuates a MOSFET to switch the coil on and off. To use it [Dino] connects to a 12V bench supply and to the injector, using a single button to start the test. See him explain the setup in the video after the break.


Fuel injector tester with 555 timer chips


Video Link...
http://www.youtube.com/watch?feature=player_embedded&v=e5Dyr34qd_k


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Go there...
http://hackaday.com/2011/01/16/20-fuel-injector-tester/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29&utm_content=Google+Feedfetcher

Building an Electronic Fuel Injector Tester
$20 fuel injector tester - Hack a Day
YouTube - Fuel injector tester with 555 timer chips
DinoFab ~ Build your own fuel Injector Tester for about $20
Don

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