Thanks Thanks:  2
Likes Likes:  13
Results 1 to 10 of 10

Thread: Losing Fuel Pressure After 1/4 Tank

  1. Top Of Page | #1
    Huffer1996's Avatar

    User Info Menu

    Losing Fuel Pressure After 1/4 Tank

    So two weeks ago I was pulling my camper to my next job site, and about an hour into my drive out of nowhere I lost all power and my fuel pressure dropped to anywhere 0.8 to 2.6.

    So I shut it off and tried started it up and it just cracked and wouldn't fire.

    I immediately changed the fuel filter and it didn't do anything so after cranking on it for 10 to 15 mins I got it to fire up so I limped it to a fuel station and put $20 in it and I immediately fixed the issue and now if it gets below 1/4 of a tank it does it even when I'm not towing.

    The truck still has the stock fuel system no FASS or anything like that it just has a Smarty SR tuner and it's never been turned above 6.

    Everywhere I've looked said the injection pump is going out pls help.

    2012 ram 2500
    G56 6 speed manual
    Dual disk southbend clutch
    Deleted&tuned
    Edge monitor
    2inch leveling kit
    Fuel crank rims
    35x12.50x17 maxxis rzr mts



    Sent from my SM-N960U using Tapatalk


  2. Likes AK Bob liked this post
  3. Top Of Page | #2
    TexNeck's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Sounds like pump or FCA could be acting up.

    How many miles?

    2013 Ram 2500
    John 3:16 - Philippians 4:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    mike@ddpmotorsports.com
    www.ddpmotorsports.com



  4. Likes AK Bob liked this post
  5. Top Of Page | #3
    Huffer1996's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by TexNeck View Post
    Sounds like pump or FCA could be acting up.

    How many miles?
    168694k and FCA?? @TexNeck

    Sent from my SM-N960U using Tapatalk


  6. Top Of Page | #4
    TexNeck's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by Huffer1996 View Post
    168694k and FCA?? @TexNeck

    Sent from my SM-N960U using Tapatalk
    FCA= Fuel Control Actuator which is on the backside of the CP3 (toward engine bay).

    To test it you can start the truck and unplug the connector to it.

    Once unplugged it should peg your rail pressure (26k+) and sound like a 12v knocking almost.

    If you decided to test do not leave it unplugged too long- I would unplug and listen for 3-6 seconds and the replug and check edge for highest rp hit.

    It is really simple and something you can do in 5 mins or less total.

    2013 Ram 2500
    John 3:16 - Philippians 4:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    mike@ddpmotorsports.com
    www.ddpmotorsports.com



  7. Thanks Huffer1996 thanked for this post
  8. Top Of Page | #5
    Huffer1996's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by TexNeck View Post
    FCA= Fuel Control Actuator which is on the backside of the CP3 (toward engine bay).

    To test it you can start the truck and unplug the connector to it.

    Once unplugged it should peg your rail pressure (26k+) and sound like a 12v knocking almost.

    If you decided to test do not leave it unplugged too long- I would unplug and listen for 3-6 seconds and the replug and check edge for highest rp hit.

    It is really simple and something you can do in 5 mins or less total.
    I'll try that tomorrow before I go into work if it doesn't is the FCA replaceable or just a whole new lift pump?


    Sent from my SM-N960U using Tapatalk


  9. Likes AK Bob liked this post
  10. Top Of Page | #6
    I WILL STAND! AK Bob's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by Huffer1996 View Post
    I'll try that tomorrow before I go into work if it doesn't is the FCA replaceable or just a whole new lift pump?


    Sent from my SM-N960U using Tapatalk
    Yes, the FCA just bolts on the side of the high pressure fuel injection pump. Approximate price $150


    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

    Sent from my iPad using Tapatalk

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

  11. Thanks Huffer1996 thanked for this post
    Likes Huffer1996, Power247 liked this post
  12. Top Of Page | #7
    Huffer1996's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by TexNeck View Post
    FCA= Fuel Control Actuator which is on the backside of the CP3 (toward engine bay).

    To test it you can start the truck and unplug the connector to it.

    Once unplugged it should peg your rail pressure (26k+) and sound like a 12v knocking almost.

    If you decided to test do not leave it unplugged too long- I would unplug and listen for 3-6 seconds and the replug and check edge for highest rp hit.

    It is really simple and something you can do in 5 mins or less total.
    Could it possibly be something in the bottom of my fuel tank? I have a transfer tank in my pickup that I fill up out of regularly..

    Sent from my SM-N960U using Tapatalk


  13. Top Of Page | #8
    Huffer1996's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by AK Bob View Post
    Yes, the FCA just bolts on the side of the high pressure fuel injection pump. Approximate price $150


    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

    Sent from my iPad using Tapatalk
    Thank you!

    Sent from my SM-N960U using Tapatalk


  14. Likes AK Bob liked this post
  15. Top Of Page | #9
    TexNeck's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by Huffer1996 View Post
    Thank you!

    Sent from my SM-N960U using Tapatalk
    If you can Get it straight from Cummins- when I did mine it was $80 direct from them and the dealer was $150 for the same part.

    2013 Ram 2500
    John 3:16 - Philippians 4:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    mike@ddpmotorsports.com
    www.ddpmotorsports.com



  16. Likes AK Bob, cumminsdieselfreak liked this post
  17. Top Of Page | #10
    #1 VENDOR cumminsdieselfreak's Avatar

    User Info Menu

    Re: Losing Fuel Pressure After 1/4 Tank

    Quote Originally Posted by TexNeck View Post
    FCA= Fuel Control Actuator which is on the backside of the CP3 (toward engine bay).

    To test it you can start the truck and unplug the connector to it.

    Once unplugged it should peg your rail pressure (26k+) and sound like a 12v knocking almost.

    If you decided to test do not leave it unplugged too long- I would unplug and listen for 3-6 seconds and the replug and check edge for highest rp hit.

    It is really simple and something you can do in 5 mins or less total.
    x2

    Quote Originally Posted by Huffer1996 View Post
    Could it possibly be something in the bottom of my fuel tank? I have a transfer tank in my pickup that I fill up out of regularly..

    Sent from my SM-N960U using Tapatalk
    It's possible that your float is hanging up and you may or may not have as much fuel as your gauge say's. Just a thought and would be an easy fix.

    Quote Originally Posted by TexNeck View Post
    If you can Get it straight from Cummins- when I did mine it was $80 direct from them and the dealer was $150 for the same part.
    x2.

    Cummins direct is always cheaper.

    2018 Ram 2500 4x4 G56
    Romans 10:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    joe@ddpmotorsports.com
    www.ddpmotorsports.com


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •