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V6 Dakotas
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jeff
Dodge Dakota
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4/25/2002
00:15:22

Subject: fuel psi?
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I am experiencing a lean hesitation with my 92 3.9 dakota. I already swapped in some ford 19# injectors I had laying around. It seemed to help a little, but I am wondering if my psi is low. What is stock fuel psi?



jeff
Dodge Dakota
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4/25/2002
20:55:00

RE: fuel psi?
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does anyone have any idea?



98FlameRdDak
Dodge Dakota
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4/25/2002
21:34:09

RE: fuel psi?
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According to my Haynes repair manual for my 1998 Dakota, with V-6, the fuel pressure should be above 30 PSI.

The manual also states that if you turn the key off and the PSI drops below 30 then you have either a bad injector or injectors.

Hope this helps you.





jeff
Dodge Dakota
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4/26/2002
00:58:11

RE: fuel psi?
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Thanks a bunch, at the very least it gives me something to go on.



98FlameRdDak
Dodge Dakota
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4/26/2002
06:32:36

RE: fuel psi?
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No problem. After all, isn't the purpose of this board to help one another??



CW
GenIII
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4/26/2002
09:28:22

RE: fuel psi?
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92 3.9 should have 40 psi + or - 5 psi.

2001 4.7 RC 5sp 3.92 LSD

Click on thumbnail for mods.

Dakota Bob
GenII
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4/26/2002
22:58:51

RE: fuel psi?
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1993 and earlier At idle with vacuum hose connected to pressure regulator 31psi
At idle with vacuum hose disconnected from the pressure regulator 39psi. This is from Haynes repair manual.

Bob

94 CC 3.9 Jet chip stage 1 JBA Headers,19# fuel Injectors,Flow master 40s Split Fire Plugs K/N Chrome Filter 180 T Stat ,TPS adjustment,Flometrics throttle body Black Magic 150 JBA wires

CW
GenIII
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4/27/2002
10:41:51

RE: fuel psi?
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Ahh yes forgot that they have a return on the earier systems. Unplug the vacuume line on hte fuel rail.:)

2001 4.7 RC 5sp 3.92 LSD

Click on thumbnail for mods.

98FlameRdDak
Dodge Dakota
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4/27/2002
18:06:12

RE: fuel psi?
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I was basing the 30 PSI off of what my Haynes manual stated. Turn the key on, run the truck and then shut off. If the fuel pressure dropped below 30 PSI then you know you have a problem. Atleast we know the fuel pressure is above 30.





jeff
Dodge Dakota
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4/29/2002
21:28:49

RE: fuel psi?
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I got a haynes manual and you guys are correct, it says 31psi and 39 w/o vac. So, I checked it and I have 65psi and 69 w/o vac!!!
Is this common, or do I have a problem? I am pretty sure the pump and regulator are oem type if not origional. The truck was just a filthy work truck when I got it.



me
Dodge Dakota
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4/30/2002
07:22:16

RE: fuel psi?
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to the top



madpourch
Dodge Dakota
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8/22/2003
20:21:26

RE: fuel psi?
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1998 dodge dakota pick up 3.9 what should fuel psi be?



J and J Auto
Dodge Dakota
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8/22/2003
20:46:41

RE: fuel psi?
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45 to 50 is normal on these trucks and it should
hold the presure for a few hours.

Could be your O2 sensor or bad plugs, I had a
hessitation in my 3rd new Dak after I changed the
plugs it was gone

Larry
J&J Auto



zootsoot
Dodge Dakota
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8/09/2004
11:59:15

Fuel Regulator
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I have a 93 Dodge Dakota V6. I have been told my fuel regulator is bad. Bad enough the part is high priced, but it is unavailable. My fuel pressure at idle exceeds 80 pounds. Help please in either finding an after market product or new or used.

Much appreciated.



lab guy
Dodge Dakota
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4/18/2011
19:12:17

RE:04 Dakota fuel psi?
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My mechanic put a frame mount fuel pump on my 2004 dakota (3.9 liter) since my pump went out just after I filled it up. (At the gas station, it wouldn't start: I swore it was bad gas, but it was the pump). So, here is the problem...he installed the pump, ran a hose to a tee, hose from tee to stainless braided hose going to engine, and a hose from the tee to a snap on brand regulator, then return to the tank. He says the regulator needs to be at 80 psi.
Fuel lines are splitting. I will replace the hose before I trash the whole thing and do it right with an intank pump, but, is this set up okay if I get some SAE30R9 hi pressure hose? Is 80 psi too high? Should I fire my mechanic of 22 years?
I went to advance, bought the only hose they sell, replaced hoses & they split after 2 weeks.



josh
Dodge Dakota
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12/14/2011
11:46:17

RE: fuel problem
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Cut off cat installed straight pipe. Feels like a fuel cutoff at
6miles into a 70mph drive. Cannot figure it out any
suggestions? Psi at idle is 46. Checkin Psi at 70mph
tomorrow. Any help would be great thanks. Ps 201,000mi



yeah
Dodge Dakota
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12/14/2011
18:01:45

RE: fuel psi?
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what year is the truck ???????



TubaRugger1
Dodge Dakota
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11/03/2018
15:16:07

RE: fuel psi?
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I have a 1998 Dakota with a 3.9 v6 4wd manual. My fuel
pressure is below 10psi. What does this mean and how do I fix
it? I have a brand new fuel pump so I’m pretty sure that
wouldn’t be the issue.



   P 1


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