How do you check to see if injectors are fireing

[Studebaker]

I have a no start situtation on my 89 auto fi. Have checked timing fuel spark. Now I need to check the ecu. Is there any way to see if the injectors are fireing? Is there anything else ecu related I can check?

Thanks in advance
David Hodges

[FestYboy]

get a noid light set. OR verify you have 12v at the green/yellow wires at the injectors. injectors are ground side switch controlled via ECU (doubtful that the ecu is the issue). verify that you have spark. verify that the rotor is in the correct position.

[Studebaker]

Thanks

What is a noid light set?

Thanks again

David

[The_Collector]

http://www.sjdiscounttools.com/ta36330.html

[FestYboy]

.... google .... works for me.

it's a visual indicator for injector pulse. basicaly a lightbulb with a proper resistance built in. that keeps from burnnig the drivers out.

[89newb]

got mine at harbro freight for $13 bucks. came with lights for most makes and models.

[NicholasJackson]

You can make an injector tester using a 555 timer and a relay.

Pretty easy to make.

http://hackaday.com/2011/01/16/20-fuel-injector-tester/

[r34king]

Put a screwdriver up to the injector and put your ear up to the other end and listen for a click

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