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Dual Action Fuel Pump Swap

Discussion in 'Early CJ5 and CJ6 Tech' started by Mark T., Apr 16, 2022.

  1. Apr 16, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    Nov 9, 2015
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    I have a dual action fuel pump with the glass on top and vacuum ports. I plan on keeping it in my stash but am having trouble locating the correct rebuild kit so I am thinking about swapping it over to something more readily available since I don't anticipate needing the vacuum. Wipers are gone and replacements appear to be electric.

    Before I make the switch I wanted to ask if anyone has information on what they would put in if they had their choice.
    1958 CJ 5 F head. Engine was recently completely rebuilt and now just putting parts back together.
     
  2. Apr 16, 2022
    Jw60

    Jw60 WRPD855 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Sedalia MO.
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    Without vac wipers it's a clear cut choice:
    get a Fuel only pump
    Anything but omix-ada or crown
     
    jpflat2a and Mark T. like this.
  3. Apr 17, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    I appreciate the feedback. No Omix-ada or Crown.
     
  4. Apr 17, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor 2021 Sponsor

    East Tennessee
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    IF you find something that isn't made in China please let us know.

    Last two replacements I bought were junk that didn't last long. I have resorted to rebuilding old original pumps I had removed in the past.
     
    scoutpilot and Mark T. like this.
  5. Apr 17, 2022
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    Mark T. likes this.
  6. Apr 17, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    Nov 9, 2015
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    Ugh. I was hoping for a Made in USA quality one. I'll see what I can find.
     
  7. Apr 17, 2022
    garage gnome

    garage gnome ECJ5 welder 2021 Sponsor 2020 Sponsor

    Western MA
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    Jun 19, 2009
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    You can get a carter fuel pump from rock auto.
     
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  8. Apr 17, 2022
    3b a runnin

    3b a runnin Active Member 2021 Sponsor 2020 Sponsor

    virginia
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    I think I got a new one on the shelf that I've had for a few yrs. Bought it for a spare. Don't remember the manf. but I will check if you are interested.
     
    Mark T. likes this.
  9. Apr 17, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    Nov 9, 2015
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    I would be interested to know more yes.
     
  10. Apr 18, 2022
    3b a runnin

    3b a runnin Active Member 2021 Sponsor 2020 Sponsor

    virginia
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    Fuel pump I've got is a Carter M2846. It does have the added vacuum for the wipers.

    Shows out of stock at Rockauto
     
  11. Apr 19, 2022
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
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    Jun 24, 2004
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    789
    Does your old pump need rebuilding?
    Many times pump problems are caused by grit/rust getting into the valves, keeping one (or both) open enough to stop the action.
    Can you disassemble/clean the pump and valves?
     
    Mark T. likes this.
  12. Apr 25, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    I has just been sitting for years (10 plus) so with rebuilding everything else I thought I could rebuild it. I enjoy that sort of thing if I can do it.

    It is marked 4032 with a 0 digit about a quarter inch to the right.
     

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  13. Apr 25, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    If I can rebuild it is there any issue with just capping off the vacuum tubes with a rubber cap?
     
  14. Apr 25, 2022
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
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    Jun 24, 2004
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    No, the vacuum side is to aid the wipers during low engine vacuum (acceleration, hills etc...). No reason you can't cap it if you don't need it.
     
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  15. Apr 26, 2022
    scoutpilot

    scoutpilot Member

    Asheboro, NC
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    Jun 7, 2014
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    Capping it will cause it to work against itself and shorten the life of the pump.
     
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  16. Apr 26, 2022
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
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    With it hooked up the the wipers it is, in effect, capped in stock form.
     
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  17. Apr 30, 2022
    Mark T.

    Mark T. Member 2022 Sponsor 2020 Sponsor

    Gilbert, AZ
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    Thank you for the replies.
     
  18. May 1, 2022
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    I don’t know if it helped or not, but I used to loop a piece of fuel line from one tube to the other when I capped off the wiper vacuum lines.
    -Donny
     
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  19. May 8, 2022
    Robert Hanna

    Robert Hanna New Member

    Abilene, TX
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    Apr 22, 2022
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    Hey Mark T., how did this work out for you? I've bought a rebuild kit from "Now and Then" and once I get my pump rebuilt I will no longer need the vacuum lines. Did you cap them off?
     
  20. May 9, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    It's continually feeding itself, I can't see how it could hurt.
     
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