fire but no juice at injectors.
04-27-2007, 07:41 AM
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
fire but no juice at injectors.
i got spark, but i can't get juice to the inj.? i checked the fuses ,they're ok .i used a test light at injector wires and nothing.like i say it's got plenty of spark.i mean its firing.
i hooked 12v directly to pump and it ran.
i hooked 12v directly to pump and it ran. Last edited by bbsr72; 04-27-2007 at 08:16 AM.
04-27-2007, 10:00 PM
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Re: fire but no juice at injectors.
The pink wires on the injectors should have 12 volts with the key on. When you say you hooked 12v to the pump and it ran do you mean the engine ran or the fuel pump ran?
04-28-2007, 05:58 PM
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Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: fire but no juice at injectors.
The positive side of the injectors should be constand +12v with the ignition on. Check that they do at the plug with the test light between the wire and a chassis ground.. The ecm grounds the other side to fire the injectors. If you put the light across the injector terminals, and they don't flas but have power, the ECM driver is bad or the wire is broken somewhere.
04-29-2007, 04:18 AM
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: fire but no juice at injectors.
everything works on my car,but the injects .i've tried a different ecm and the same thing ,power evrywhere but the injectors. does the f/p relay have anything to do the injectors?
Last edited by bbsr72; 04-29-2007 at 05:04 AM. Reason: left out last question
04-29-2007, 08:08 AM
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Car: 91 RS Camro Ttop
Engine: 5.0 LO3
Transmission: 700R4
Axle/Gears: 3.42
Re: fire but no juice at injectors.
indirect i suppose. hard for injectors to spray gas if the pump doesn't get it to em.
04-29-2007, 09:42 AM
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
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Re: fire but no juice at injectors.
never mind ,it won't even turn over now-AGAIN!
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04-29-2007, 02:58 PM
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Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: fire but no juice at injectors.
No, not never mind. That problem is still there. Trace back the power from the injectors back into the fuse block. There must be a break somewhere if everything else has power. Did you check the fuses?
05-01-2007, 06:00 AM
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
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Re: fire but no juice at injectors.
i checked fuses ,the car turns over good now.but still no juice to the injectors.
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