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Old 01-14-2007, 05:45 PM   #1
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Default Fuel injector pattern.

Took my fuel rail off along with the injectors.(part of another project I'm doing)

Made a home brew pump, connected a 12V supply and tested each injector. How come the injectors spray 4 streams of fuel instead of like a fine mist spray or something? Wouldn't the fine spray mix with the air better than a stream of fluid?
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Old 01-14-2007, 07:05 PM   #2
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Probably not enough fuel pressure...
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Old 01-14-2007, 07:30 PM   #3
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Definitely the fuel pressure and the injectors are only open for milliseconds at a time.
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Old 01-15-2007, 07:21 PM   #4
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Agree with 95na. You're hitting the injector with constant 12vdc. Normally, the injectors are pulsed with a PWM signal. (PCM switches injector ground in & out at high frequency)
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