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  •  » Fuel pressure test

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    6/29/2023 8:38 PM  #1

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Fuel pressure test

    Does anyone make or have an adaptor for the springlocks on the fuel rail to attach a gauge for a 5.0?
    Or what is the best way to check the fuel pressure?
    Cannot find a schader valve on the rail anywhere.
    I have a fuel rail off of an F150 i might have to cut up to make one otherwise. 

    How's that Sal?



     

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
     

    6/29/2023 8:55 PM  #2

    Raymond_B
    Senior 24-7 FYI Addict

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    From: Fort Worth, TX
    Registered: 4/01/2013
    Posts: 1,193

    Re: Fuel pressure test

    Something like this?

    https://www.glowshiftdirect.com/3-8-quick-connect-efi-fuel-line-adapter/

     

    6/30/2023 6:24 AM  #3

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,884

    Re: Fuel pressure test

    What fuel rail are you running, Alan? 

    Last edited by Bullet Bob (6/30/2023 6:26 AM)

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    7/01/2023 5:39 AM  #4

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Re: Fuel pressure test

    Raymond,  I have an engine out of an 89 Mustang, that one wont work,

    BB1  The fuel rail is off an early Mustang as far as I can tell.

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
       •Thread Starter
     

    7/01/2023 5:41 AM  #5

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Re: Fuel pressure test

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
       •Thread Starter
     

    7/01/2023 7:01 AM  #6

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,325

    Re: Fuel pressure test

    Alan, the factory foxbody “riser fuel rail”…from oil pan to intake fuel rail has the shrader valve.
    The location is behind the alternator.

     

    7/01/2023 7:06 AM  #7

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,325

    Re: Fuel pressure test

     

    7/01/2023 11:28 AM  #8

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Re: Fuel pressure test

    If i had used those, i would be in luck. I modified the fuel lines from a 95 F150. I dont think there is a shrader valve in them

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
       •Thread Starter
     

    7/01/2023 6:02 PM  #9

    Raymond_B
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    From: Fort Worth, TX
    Registered: 4/01/2013
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    Re: Fuel pressure test

    I am scratching my head on this one, what year F-150? I had a gauge on my Lightning (95 F-150). IIRC it was a quick connect fitting, but it's been a while.

    Not my truck, but a pic of a Lightning fuel rail.

    Last edited by Raymond_B (7/01/2023 6:04 PM)

     

    7/02/2023 8:18 AM  #10

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,325

    Re: Fuel pressure test

    Did the 5.0 and 5.8 use the same hardline fuel rails with different flex hoses?
    The 1997 F250 5.8L fuel rail has schrader valve on passenger side near front.

    Last edited by Nos681 (7/02/2023 10:46 AM)

     

    7/02/2023 10:42 AM  #11

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,325

    Re: Fuel pressure test

    Perhaps easiest solution is to drill and tap the block near distributor.

    Just verify it doesn’t interfere with distributor.

     

    7/02/2023 7:42 PM  #12

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,884

    Re: Fuel pressure test

    Alan, I just checked the inventory and I have a spare Fox fuel rail with both connections on the right side, like yours, except mine has the schrader valve at the fuel pressure regulator.  PM your email addy and I'll send pix.  It's yours for the shipping in'n you want it.
    BB1
     

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    7/02/2023 8:44 PM  #13

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Re: Fuel pressure test

    Bullet Bob, PM sent
     

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
       •Thread Starter
     

    7/03/2023 11:36 AM  #14

    Alan
    I FYI 24-7

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    From: Axtell KS
    Registered: 4/03/2013
    Posts: 515

    Re: Fuel pressure test


    Drilled and tapped the inlet block on the fuel rails today. Had 42psi with the vacuum unhooked. 35 with it hooked up. 
    Looks like i am either going to have to get a 60 or 62 mm throttle body or have somebody tune the ecu.
     

    67 Coupe, 5.0 EEC IV Fuel injected. T5, 3:70 rear
       •Thread Starter
     

    7/03/2023 2:26 PM  #15

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,464

    Re: Fuel pressure test

    I have a used Ford Racing 65mm TB sitting on the shelf.I don't know that it would fix your problem, but PM me if you're interested. 

     

     

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