Jump to content
SAU Community

Small Fuel Pump Issue ..

fritters77

By fritters77,
in Four Door Family & Wagoneers

 Share

Recommended Posts

fritters77 Enthusiast

fritters77

Posted
Posted

Hi Fellow Wagoners

I just installed a new fuel pump a Walbro 255l and all went together fine except Now when i first take off or put my foot down in any gear it seems like the fuel pump is struggling for a second then off we go,,,,,,,

i noticed after it was all done and installed that everyone is direct wiring them will this fix my problem......Or is this a different problem like the ecu cant work out whats going on with the new pump .

I did try and search for this but came up with nothing other than you should directly wire the fuel pump to get the max out of your new pump...

Any help would be much appreciated...

Cheers

Link to comment
https://www.sau.com.au/forums/topic/411684-small-fuel-pump-issue/
Share on other sites
fritters77 Enthusiast

fritters77

Posted
  • Author
Posted

Yeah I'm to sure what's going on I might have to pull it back out and check all the hoses make sure there is no splits or anything but its almost like there isn't enough power voltage for the first surge of fuel then it catches up....

Commsman Veteran

Commsman

Posted
Posted

I read the thread title & thought your issue was with a small fuel pump & that maybe a larger fuel pump would fix it. Then I read you already had a 255L Wallbro.. mmm, I get it.

Reminds me of the time the radio lost & found announced: "Lost, a large brown lady's handbag". I always wondered that had they'd given a description of the handbag, then the large brown lady would stand a better chance of getting it back.

:)

fritters77 Enthusiast

fritters77

Posted
  • Author
Posted

I read the thread title & thought your issue was with a small fuel pump & that maybe a larger fuel pump would fix it. Then I read you already had a 255L Wallbro.. mmm, I get it.

Reminds me of the time the radio lost & found announced: "Lost, a large brown lady's handbag". I always wondered that had they'd given a description of the handbag, then the large brown lady would stand a better chance of getting it back.

:)

haha very true thanks for the interest though........i'm going to hard wire it this weekend then Nistune time finally.....
DaveB Mentor

DaveB

Posted
Posted

Lol at the dangling modifier examples.

If you only changed fuel pumps, and not fuel pressure regulator, then you shouldn't have any issues - car should run just as before. I have the Walbro GSS341 as well (the 255l/h pump) and have never bothered to hard-wire it. Made no difference to the tune when installed. It has been running on a Nistune tune with a higher fuel pressure and larger injectors for a couple of years now without issues.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

Lol at the dangling modifier examples.

If you only changed fuel pumps, and not fuel pressure regulator, then you shouldn't have any issues - car should run just as before. I have the Walbro GSS341 as well (the 255l/h pump) and have never bothered to hard-wire it. Made no difference to the tune when installed. It has been running on a Nistune tune with a higher fuel pressure and larger injectors for a couple of years now without issues.

I have seen it affect the tune many times, although other times it is fine. Just because you had no issues doesn't mean everyone will be fine, your car may have even been modified in Japan.

The Walbro's are usually problematic which is why I suggest hard wiring them, as that rules out any issues.

fritters77 Enthusiast

fritters77

Posted
  • Author
Posted

I hard wired the pump on Sunday and has fixed the problem........for the $50 worth of parts and 1h of my time well worth doing ......

Only thing when doing the mod was making sure you cut the right wires and put the right wire in the right spot on the Relay other than that pretty easy to do.......

Just keep a couple of spare Fuses in the car and your all good...

In case anyone else is interested in doing this mod the 2 wires leading to the fuel pump were Black /yellow + and purple -....there were 5 wires going to the top of the fuel tank the 2 pin plug is the one going to the fuel pump and those 2 wires were thicker than the rest so made sense.....

thanks for your help people......

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • suko
      J50 clock date suddenly reset to January 1

      By suko · Posted

      I've got a 2011 J50 that I imported six years ago. The unmodified factory AV system date and time has always been correct ( Japanese timezone of course ) up until last month. About two weeks ago, at engine start, the system wished me a happy new year ( in Japanese of course ). I can't think of anything that would make the system think that the date had changed, unless the GPS component has failed/reset somehow ? I checked the GPS reception in the system settings, and it can still see the satellites. Has any other J50 owner had this happen ?  It's no biggie, just annoying that it tells me the wrong date anytime I start the engine. 😅
    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      Love following your adventures on IG, hopefully if you're still around in Japan when we visit again wouldn't mind going for a few beers with you (that's if you're keen on hearing how I hate Nissans).
    • Black_CSR
      Wheel Sizes & Offsets For Skylines

      By Black_CSR · Posted

      ok so if i wanted to go 18's i would go for 8's  in front 30+ or 32+ off set at front and the back 9 would be ok? what offset should i aim for.. then can i do some  hunting for wheel rim choices..    If i get this - will this fit all around: Size: 18 x 8.5 +37 - n what tyres size tyre should i get for front n back?  
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      Absolute f*cking nightmare. I had to take breaks constantly, and I was always pissed off when I got home. The line split in Italy on day 2 (we drove from the Netherlands), lol. Driving any narrow European town was... well, sh*t.   Appreciate it man. Here, I'll just drop a favourite from the load I took on Saturday.   I'll update here when things happen with the car, the thing is, with stock power and almost everything chassis-wise taken care of, there really are no problems. 268,000kms now and counting.  
    • Kinkstaah
      WTB R34 GTR Guard Liners

      By Kinkstaah · Posted

      Ah! I actually managed to snag a lightly used set.... that aren't so suitable for me right now. They don't work on a GTT without some cutting or creative heat moulding. I thought about reselling them myself cause I didn't want to murder them, but it looks like I'm probably going to attempt to murder them/melt them because I may as well. @GTSBoy @PranK can somebody close this thread?
×
×
  • Create New...