 FI fuel presure, Green injector spec |
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| gunny |
 Apr 17 2013, 04:36 PM
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#1
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Member  Group: Members Posts: 205 Joined: 17-October 12 From: Madison Al Member No.: 15,051 Region Association: South East States  |
I am running very lean and want to raise the fuel presure to richen it up. How high can I raise it safely? Does anyone know the spec range for the green injectors?
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| Mike Bellis |
Apr 17 2013, 04:43 PM
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#2
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Resident Electrician Group: Members Posts: 8,347 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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Until something bursts! (IMG:style_emoticons/default/biggrin.gif)
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| 914itis |
Apr 17 2013, 08:50 PM
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#3
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
Fuel pressure for green injectors (djet) should be at 29 psi. There are other adjustments to deal with the with your issue. I don't think fuel pressure adjustment will make a difference. You may have to adjust the knob on the computer.
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| Mike Bellis |
Apr 17 2013, 09:08 PM
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#4
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Resident Electrician Group: Members Posts: 8,347 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None
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If your injectors are gummed up, that will reduce flow, thus giving you a lean condition. You could turn the pressure to increase fuel but you are treating the symptom and not the problem.
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| Dave_Darling |
Apr 17 2013, 10:49 PM
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#5
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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32 PSI should be safe.
Increasing the pressure should richen the mixture across all conditions. It probably won't be by an equal amount in all conditions. The ECU knob only affects the idle mixture. You can add resistance to the intake air temp sensor (or just unplug it) to enrich the mixture slightly, or add resistance to the head temp sensor circuit to enrich it more. --DD |
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