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2G AWD vs FWD fuel sending unit and kinked fuel line

Posted by jkuga, Jul 29, 2020

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  1. jkuga

    jkuga Proven Member

    117
    17
    Joined Feb 12, 2017
    Silverton, Oregon
    Hello tuners, in the process of trying to pull my stock fuel pump to install my walbro 255 I have kinked the fuel sending unit hard line quite a bit...
    20200729_141134.jpg 20200729_141121.jpg 20200729_141115.jpg 20200729_141021.jpg
    So I have two questions. The first: is the line kinked enough to the point that it will effect fuel flow? After all what is the point of a higher flowing pump if the line cannot flow the pump?
    And second: I found a new fuel sending unit on rockauto as there are no more oem units available. However the rock auto part states it is for FWD. Is there a difference between the AWD and fwd units? From a quick search it looks like the AWD has the fuel gauge sender and pump assembly together and fwd has it separate.
    Really wish I had thought a bit more before putting all my strength on a little metal line...
     

    Street Build 496  8

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  2. jkuga

    jkuga Proven Member

    117
    17
    Joined Feb 12, 2017
    Silverton, Oregon
    Just found this photo while doing more searching.
    IMG_0969.jpg
    May be what I have to end up doing but any input is still very much appreciated.
     

    Street Build 496  8

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  3. jkuga

    jkuga Proven Member

    117
    17
    Joined Feb 12, 2017
    Silverton, Oregon

    Street Build 496  8

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  4. spyderdrifter

    spyderdrifter Freelancer

    4,789
    484
    Joined Jul 11, 2009
    Fountain, Colorado
    Yes, you should be able to put that in its' place (weld it on too). These parts are obviously no longer made, so modding them so they still function is one of the few options. A kink in your line would add resistance to the fuel flow, so in theory, it should affect flow (if you think about it like electricity and electrical resistance). Also, the FWD unit bolts onto the top of the fuel tank, unlike the AWD version, so doubt the 2 would have any sort of compatible parts between them that aren't removable.
     

    1K  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    2K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    2K  5

    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
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    jkuga likes this.
  5. jkuga

    jkuga Proven Member

    117
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    Joined Feb 12, 2017
    Silverton, Oregon
    Thanks for the reply. I think I'm gonna go with the link I posted as it doesn't appear to require any welding and get a tank to rail an line kit. Not something I planned on doing but when does it ever go according to plan haha.
     

    Street Build 496  8

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  6. Greddylove

    Greddylove Probationary Member

    12
    1
    Joined Jun 28, 2020
    Marysville, Washington
    Interesting read so I jumped on Fleebay and found same fittings -06an 2 for $9.95 just saying. I’m pretty sure all these fittings are made in the same factory and range from cents to dollars depending who you buy from.
     
    jkuga likes this.
  7. MattHDSM

    MattHDSM Probationary Member

    28
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    Joined Oct 20, 2018
    Ottawa, ON, Canada
    I used that same fitting after I cracked the high pressure hard line. It’s pretty low profile, so you shouldn’t run into any clearance issues when putting the access cover back on. One thing I did run into using that fitting was that fuel vapors could get past the seal. That might have been because the top of my fuel sending unit was pretty pitted. If you run into that issue, permatex makes a fuel resistant sealant that worked nicely for me.
     

    Street Build 451  4

    1997 Eagle Talon TSi AWD
    16.870 @ 82.17 · 2G DSM
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    jkuga likes this.
  8. jkuga

    jkuga Proven Member

    117
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    Joined Feb 12, 2017
    Silverton, Oregon
    Thanks for the tip!
    I hopped in eBay and found the fittings you're talking about. The only thing that concerns me is they seem longer than the STM one and I know clearance for the 2g AWD hanger is a factor.
     

    Street Build 496  8

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  9. Greddylove

    Greddylove Probationary Member

    12
    1
    Joined Jun 28, 2020
    Marysville, Washington
    There’s a ton of different options I was just saying that quite a bit cheaper. I’m not opposed to doing some custom work either
     

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