Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: fuel pressure and filter

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Dec 2006
    Posts
    8

    fuel pressure and filter

    i have a bg280 pump, filter is between fuel cell and pump, it's a bg5000 should it be on other side of pump or does it make no difference .........its worked fine for years but noticed fuel pressure has been eratic verry low 3-5 psi down track .......i was riding th car around in the pits warming it up and noticed fuel press was on zero i turned the fuel pump switch off and then back on it jumped up to 8 where it usually runs .........replaced regulator still no good 2nd round when i hit TB it fell on its face i thought it was going to die but it recovered just not fast enough ......... i went back to trailer hit TB before i cut it off it went right up on RPM against 2 step ...............i checked pressure at pump it was around 14 removed pressure relief spring shimmed it got press up to 21 could th press relief have been sticking or press set to low from manufacture im sure rasing press on pump will help ..........just wanting to hear th thoughts of others thanks

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Dec 2007
    Location
    ohio
    Posts
    810
    When did you last change the filter element?

  3. #3
    Junior Member SHOW GUEST
    Join Date
    Dec 2006
    Posts
    8
    havent changed it removed it looked fine i have a screen in my funnel but may try to find replacement filter

  4. #4
    Senior Member MASTER BUILDER
    Join Date
    Dec 2005
    Location
    berea,ky
    Posts
    184
    The filter is supposed to be before the pump to catch trash before it goes through the pump.I have one of the long Barry Grant fuel filters and just changed the filter in it.It ended up being a Wix filter.The original filter that came out of it had a Napa part number.

  5. #5
    Senior Member RACING JUNKIE TheRabbit's Avatar
    Join Date
    Jan 2007
    Location
    Augusta, Ga.
    Posts
    2,295
    A few years ago I spent some time with a magna fuel rep at a PRI show. He stopped by to look at one of the trucks in our booth. I mentioned that my pump would blow a fuse every now and then. He asked me if mine was plumbed like the one on display which it was. ( with filter before the pump.

    He told me to put the filter after the pump.

    I said are you sure and again he said AFTER the pump.
    It's harder on the pump to pull fuel through the filter and can cause the pump to pull more amps than it's designed to. Also any small trash you get will pass through the pump and into the filter and not drop fuel pressure.
    Filter the fuel good before you put it in the tank and you shouldn't have any problems.

    With that being said, even BG web site use to have a diagram that showed how to plumb a system and it showed the filter before the pump.

    I swapped mine and put it on the out side of the pump after I talked to him and have never had any problems.

  6. #6
    Senior Member DYNO OPERATOR
    Join Date
    Jan 2004
    Location
    central Illinois
    Posts
    459

    fuel

    If you check with Aeromotive, they recommend an alcohol 150 steel mesh filter before the pump and a paper 40 mesh filter before the carb. I guess everyone didn't go to the same filter school in college.

    I just use the 150 mesh before the pump. Not too much restriction, yet keeps out any bigger debri from getting to the needle and seat on a carb.

  7. #7
    Senior Member RACING JUNKIE TheRabbit's Avatar
    Join Date
    Jan 2007
    Location
    Augusta, Ga.
    Posts
    2,295

    Re: fuel

    Quote Originally Posted by markdunlap
    If you check with Aeromotive, they recommend an alcohol 150 steel mesh filter before the pump and a paper 40 mesh filter before the carb. I guess everyone didn't go to the same filter school in college.

    I just use the 150 mesh before the pump. Not too much restriction, yet keeps out any bigger debri from getting to the needle and seat on a carb.
    I actually drink mine and run it through a natural filter then fill my tank. I don't recommend this to everybody. I am a professional!

  8. #8
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    Try running one with the filter and then take the element out, you may be shocked.

    I never run one after the pump, to much restriction.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  9. #9
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
    Join Date
    Mar 2008
    Location
    Emmett, Idaho
    Posts
    7,334
    Restriction is restriction, before OR after......
    TRUTH is HATE
    to those who
    HATE TRUTH

    God Bless our folks in uniform
    "We the People, have your backs"
    http://www.racingjunk.com/profile/279898

  10. #10
    Senior Member RACING JUNKIE TheRabbit's Avatar
    Join Date
    Jan 2007
    Location
    Augusta, Ga.
    Posts
    2,295
    Quote Originally Posted by hammertime
    Try running one with the filter and then take the element out, you may be shocked.

    I never run one after the pump, to much restriction.
    That's actually backward. Pump is gravity fed with pressure on the out side.

    I don't run one before the pump. :wink:


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy