Injector Testing

[1972_911T]

Im wanting to test my fuel injectors to see if they need cleaning while there off for my eninge rebuild. Does anyone know how to trigger the injectors, I belive under normal operation its 12v pulsed dc voltage. What im wanting to know is can I trigger them to be constantly open by simply using 12v dc not pulsed?

Thanks Steve

[ChrisBennet]

I assume we aren't talking about a '72 motor here.
You cannot use a non-pulsed source to hold them open - or least not if you don't want to burn them up.
Someone can correct me here, but I think in operation, the injector is opened initially by a greater current then what is used to keep it open. In other words, even using a pulsed 12v source might not be sufficiently safe.
-Chris

[Zendalar]

Depends if they are high or low impedance injectors.

If they are low impedance injectors they will burn up fast unless you drive them with pulsewidth modulated signal.

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