Search My Blog

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


[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...

tagged: , , ,

Go there...

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

No comments: