 Fuel Injector question. |
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| Black914_4 |
 Apr 1 2012, 02:09 PM
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Member  Group: Members Posts: 272 Joined: 11-January 12 From: AR Member No.: 13,994 Region Association: South East States  |
Stock '74 2.0
How much pressure does the injector need to work properly? I know the fuel reg is set about 29 psi. |
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| type47 |
Apr 1 2012, 03:25 PM
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
I'm not sure about the idea that the "pump kicks on" at any particular pressure as I thought it ran continuously (other than starting cycle) and the pressure regulator "bled off" pressure by "controlled leaking" gas back to the tank. Injectors open when the ECU sends a voltage signal to the injector and the time-duration of the signal determines the time open and therefore the amount of fuel injected. I would guess that an injector will work at any pressure since it's basically a solenoid (914 D-Jet injector we're talking about, not MFI injector). 'Course you wouldn't get the right charge unless the pressure was set correctly (~29psi). I do have a question about how you think the fuel is heated and creates a problem. I've never seen any thing about temp of fuel and the factory set up having a problem.
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Posts in this topic
2xs performance Fuel Injector question. Apr 1 2012, 02:09 PM
vsg914 Hmmm, not sure, but since the specified pressure i... Apr 1 2012, 02:23 PM 2xs performance The regulator lets fuel by and keeps system at lea... Apr 1 2012, 02:35 PM
orange914
But to keep the pump from running full time and c... Apr 1 2012, 08:50 PM vsg914 What Jim said. The pump runs for a half second whe... Apr 1 2012, 03:30 PM Dave_Darling That's correct, the pump just runs continuousl... Apr 1 2012, 03:31 PM 2xs performance
What Jim said. The pump runs for a half second wh... Apr 1 2012, 03:56 PM brant Thats why the factory has a return line...
make su... Apr 1 2012, 04:33 PM Tom The fuel pump shood turn off if the engine dies. T... Apr 1 2012, 06:42 PM 2xs performance return line works fine.
The factory wires are st... Apr 1 2012, 06:47 PM |
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