FYI FORD - MustangSteve's Ford Mustang Forum
The Internet's Most Knowledgeable Classic Mustang Information
IF YOU HAVE A QUESTION ABOUT CLASSIC FORD MUSTANGS, YOU HAVE COME TO THE RIGHT PLACE!
MustangSteve has over 30 years of Mustang experience, having owned 30 of them and restored several others. With the help of other Mustangers, this site is dedicated to helping anyone wanting to restore or modify their Mustang.... THERE ARE NO DUMB QUESTIONS!!!!!
Visit MustangSteve's web site to view some of my work and find details for:
FYIFORD Contributors' PICTURES - Power Brake Retrofit Kits for 65-66 Stangs - Classic Mustang FAQ's by MustangSteve - How to wire in a Duraspark Ignition - Mustang Ride Height Pictures and Descriptions - Steel Bushings to fit Granada Spindles to Mustang Tie Rods - Visit my EBAY store MustangSteve Performance - How to Install Granada Disc Brakes MustangSteve's Disc Brake Swap Page - FYIFORD Acronyms for guide to all the acronyms used on this page - FYIFORD Important information and upcoming events

You are not logged in. Would you like to login or register?

  • Index
  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » fuel pump

    • 1 of 1

       

    6/04/2016 11:18 AM  #1

    Alan
    I FYI 24-7

    Offline

    From: Axtell KS
    Registered: 4/03/2013
    Posts: 517

    fuel pump

    Took my 67 coupe out last night to go to a cruise. Got 1-1/2 miles from home and it just died. Would not even fire. Narrowed down to the fuel pump. Put a new one on and it still will not run. Will run with a temporary tank from beyond the pump to the carburetor. Primed the pump and still no go. Is it possible for the eccentric in the motor to go bad? It is an 85 302 from a truck. I tried a temporary tank right on the fender leading to the fuel pump and it will not pump even into a bottle.
    Any suggestions?

     

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

    6/04/2016 11:31 AM  #2

    George
    FYI FORD Member

    Offline

    From: Central California
    Registered: 4/01/2013
    Posts: 34

    Re: fuel pump

    The cam bolt may have backed out allowing the eccentric to loosen.

    Cut to fit, Pound to shape, Paint to match
     

    6/04/2016 12:52 PM  #3

    MS
    Forum Originator

    Offline

    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,313

    Re: fuel pump

    You have done the correct stuff to isolate the problem. Kudos on the methodical testing.

    You can see the eccentric though the hole where the fuel pump bolts on, using a mirror and flashlight. Since it is a new fuel pump, it might be worth trying another pump.

    Was the engne from a carbureted truck?  If not, the eccentric addition might be suspect. There are several ways to incorrectly install it and only two right ways, depending on the type of eccentric added.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    6/04/2016 3:11 PM  #4

    Alan
    I FYI 24-7

    Offline

    From: Axtell KS
    Registered: 4/03/2013
    Posts: 517

    Re: fuel pump

    I am purty sure it is the eccentric. I took off the new pump and looked in the hole. I can take a stick and rattle it off the front of the timing cover. Don't know if it was a carbureted engine or not. PO had installed the engine. I can feel the WYAIT  monster again. Do I fix this or just put in the EFI roller motor I have sitting in the corner?

     

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

    6/04/2016 5:54 PM  #5

    BobE
    Senior 24-7 FYI Addict

    Offline

    From: White Plains, NY
    Registered: 4/04/2013
    Posts: 2,694

    Re: fuel pump

    If you can 'rattle' the eccentric, either the bolt backed out or something broke.  The eccentric should be firmly in place.  You'll need to remove the TC cover to fix.

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    6/04/2016 7:32 PM  #6

    MachTJ
    I FYI 24-7

    Offline

    From: Wisconsin
    Registered: 5/18/2014
    Posts: 348

    Re: fuel pump

    It will rattle a little bit if it is a 2 piece eccentric. There are one piece and two piece units. If it is moving forward and back alot then yea the bolt probably is backing out. If it moves like an 1/8 or less it's probably just a 2 piece design.

    Last edited by MachTJ (6/04/2016 7:34 PM)

     

    6/06/2016 12:31 AM  #7

    50vert
    Senior 24-7 FYI Addict

    Offline

    From: QLD Australia
    Registered: 4/01/2013
    Posts: 1,433

    Re: fuel pump

    Is the pump arm under the eccentric? I once installed a pump incorrectly and had the same symptoms.

    "Those telephone poles were like a picket fence"
     

    6/06/2016 7:32 AM  #8

    Bullet Bob
    Senior 24-7 FYI Addict

    Offline

    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,892

    Re: fuel pump

    My friend just when through this with his 64 Falcon, 260.  It had a fresh engine when he bought it and ran great.  Then the FP quit and installing a new one didn't help.  After a lot of wailing and gnashing of teeth he pulled the front cover only to discover that the eccentric was flopping around.  He put it back together and torqued the bolt with a little loc-tite and a few miles later it was doing the same thing....loose cam bolt.  This time a closer look revealed that the last engine builder used a slightly long cam bolt which was bottoming.  He ground off about three threads and all is well.

    BB

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

    6/07/2016 8:09 PM  #9

    Alan
    I FYI 24-7

    Offline

    From: Axtell KS
    Registered: 4/03/2013
    Posts: 517

    Re: fuel pump

    Houston, I have found the problem.
    Bolt was backed all the way out. Now I need to find a new eccentric. This one was stamped and the little tab is busted off.  Friend says he has some, but they are in engines and I will need to take one apart to get it. I think he just wants the timing covers taken off. Anybody know what torque the bolt should be when I put it back together?

    Last edited by Alan (6/07/2016 8:11 PM)

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

    6/07/2016 9:01 PM  #10

    josh-kebob
    Senior 24-7 FYI Addict

    Offline

    From: Madison, AL
    Registered: 4/06/2013
    Posts: 2,902

    Re: fuel pump

    40 ft pds use some thread locker

     

    6/08/2016 7:12 PM  #11

    MS
    Forum Originator

    Offline

    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,313

    Re: fuel pump

    Be sure you have the correct forged washer. It is really thick and will not bend  Use of a thinner stamped steel washer just about guarantees another failure. I have never used thread locker and have never had a failure. If mine comes loose on the Million Dollar highway, it's Josh's fault.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    6/08/2016 8:42 PM  #12

    Alan
    I FYI 24-7

    Offline

    From: Axtell KS
    Registered: 4/03/2013
    Posts: 517

    Re: fuel pump

    I am sure I have the correct washer. It is about 3/16 to 1/4" thick. I am assuming I will need to get the two piece stamped eccentric to replace this one. Tore one out of a motor tonight but it was a single piece that needed the dowel through it.
    I only have about 1/4" deep hole that the tab will fit in.

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

    6/09/2016 7:47 AM  #13

    MS
    Forum Originator

    Offline

    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,313

    Re: fuel pump

    Be sure your timing sprocket has the raised surface under the eccentric so it allows the outer ring to spin freely.  1/4" deep hole sounds about right for the two-piece eccentric.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

     

    1 of 1

  • Index
  •  » FYI Ford, Classic Mustang Tech Discussion
  •  »  fuel pump

    • Board footera


    REMEMBER!!! When posting a question about your Mustang or other Ford on this forum, BE SURE to tell us what it is, what year, engine, etc so we have enough information to go on.