does anybody know....

[tony/ka24de]

does anybody know how many volts injectors take. I'm asking this because I am going to clean my injectors and I want the injectors to open up. I know that they won't pulse, but as long as they stay open.

[Nathan]

Interestingly enough, they do not open via voltage, but rather by being grounded. They receive a constant 12v from the ecu, but the ecu controls a ground that cuts on and off to them, at least thats my understanding.

[andrave]

right but they are still being provided a certain voltage to open them. electricity flows from negative to positive anyway, but they still probably take a certain amperage/voltage to open.

[C-Kwik]

Actually, injectors always have a constant 12 volt charge through the fuse box. The ECU provides the ground in order to open the injectors.

[andrave]

right but the 12 volt charge is of a specific voltage (12) and of a certain amperage. electricity doesn't care if you shut off the ground or the positive lead, it always flows in the same direction (negative to positive) and always has a specific voltage, and is consumed with a specific amperage.

for instances, I could probably but a 12 volt 5 milliamp charge to an injector and it wouldn't move it. there just isn't enough amperage there to open the injector.

[huguetpj]

Just so Tony (or anybody else for that matter) doesn't get confused by this discussion. You need to use a 12V voltage source connected to the injectors with at least a 1AMP current for high impedance injectors (12Ohm) or 4AMP for low impedance injectors (3Ohm).

Now I'm confused :rolleyes Wouldn't that current heat up the injectors very fast?

[andrave]

very low current.however, I know that you can max out injectors. I wonder if when cars step up to 32 volt and higher electrical systems if you could lessen the amperage, which would less the heat and stress placed on injectors?

[BONES S13]

if u were to manually keep a injector open even for a quick second you will most likely burn up the the ecu injector driver. i've seen from experience where someone hooked up a momentary switch to the injector harness and fired the ecu but that was on a GM though