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EstoMax
Encyclopedia-Nissan
Joined: 02 Apr 2005
Posts: 1313
Location: Seattle
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 Posted: Thu Mar 09, 2006 8:13 pm Post subject: HowTo: S14 Walbro fuel pump install |
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Hey Everybody, didnt see any threads on an s14 fuel pump install (there is an s13 one on NICO but s14's get a distinctly different situation)
This writeup here should cut the install time on a fuel pump easily in half. It took me over 2 hours of screwing around and unsureness to get the job done, but in reality i could probably do it in an hour or less if i had to do it 2nd time around.
So. you order a walbro fuel pump install kit for your car, you get the parts and you get a..
Shiney pump
Piece of hose with 2 clamps
Fuel sock and lock washer
And wire with 2 crimp connectors
BEFORE First: HAVE LESS THAN HALF A TANK OF GAS!
First: assemble the fuel pump
If you want you can reuse the stock fuel pump sock which is way bigger (i pulled the walbro one back off, you gotta use a flathead to pop the lock washer out side to side if you already put yours on, do the same thing on the stock fuel pump to remove that one)
Then you wanna put the hose on top, this part you will probably have to cut to size once you're ready to install it, i had to cut over half an inch off the top
Ready to go out to the car, you wanna turn on the car and then pull out the fuel pump fuse, this will turn off the fuel pump and your car will run the lines dry and die.
If you're like me and your motor is out then be prepared to spill a lot of gas all over the place 
Then pop off the gas cap and let all the pressure out
Locate your fuel pump cover, I dont know why the engineers at nissan decided to put ours in the thin cubby between the trunk and the rear seats but its right here:
Takes a 10mm wrench to pop those off and then you're in.
At this part i found it easier to work from inside the car because i didnt have to be bent over in the trunk 
The vacuum lines are a real PITA to pull off, but move the crimpers out of the way, put pliers around the line and twist it left and right a bit to loosen it up (dont put too much pressure or fear crimping the opening the hose is on)
Also at this point fuel may start spilling out of the lines the vacuum hoses were on (especially if your tank is full like mine) Nothing much you can do here except try to catch it on paper rags.
Next you gotta take the big locking plastic cap off the fuel pump assembly. The FSM dictates the use of a big proper size Nissan Fuel Pump Removal Wrench or something, but since i didnt have this at hand and i could turn it with my hands i got something long with a blunt end, set it on the edge of the cap and pound it with my hand, a few inches of movement will make it twistable by hand.
Now you can pull off the cap, and set it aside a bit, the rubber grommet around it may fall in the gas tank but luckily it floats.
Here you can see why its a good idea to have less than half a tank of gas. I filled mine up to full before pulling the motor and I barely was able to get my hand in there and get the pump out without displacing enough gas to overflow into the car.
Anyways, Here comes the messy part so i have no pics, but you put a big rubber glove on (or in my case a plastic bag) and reach in the tank. If you're inside the car you wanna put your hand towards yourself because the fuel pump is on the wall (as you follow the fuel line into the tank)and you will find it is latched. You pull that up and it should come right out of the bracket with relative ease.
Whipped out a quick sideprofile of the tank of what it feels like to me anyway.
When the bracket is out you pull off the old pump, cut the stock wiring harness and bring the new pump and wiring harness out. The red solid wire is + (to red)and red striped is - (to black).
On the bottom of the pump when you assemble it to the fuel pump bracket it dont forget to put on the plastic grommet to absorb vibrations from the pump.
Now read backwards and reassemble everything.
If you're like me and spilled gas all over the place leave the place open and let it dry for a while 
your input is welcome,
Thanks,
Marko
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t3/t04e (60 trim), bikirom, groundzero mani/dp, 82 lb AMS FS
94 d21 kaE 4x4 stock
Last edited by EstoMax on Sun Sep 03, 2006 7:57 pm; edited 2 times in total |
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Voltron
Dont Question My Nissan Knowledge
Joined: 28 Jun 2005
Posts: 929
Location: Oakland
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| Posted: Thu Mar 09, 2006 8:59 pm Post subject: |
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Nice write up! I had a full tank when I did the install too. Gas sucks, burns your skin.
I love the 315 tires in your drawing ahahah
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JGSturbo
KA-T.org Sponsor
Joined: 20 Nov 2004
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Location: Coos Bay, OR
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| Posted: Thu Mar 09, 2006 10:05 pm Post subject: |
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Nice my 255 will be here tomorrow, that info will be handy...
+1 for sticky or tech section  Good job 
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klattr1
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| Posted: Thu Mar 09, 2006 10:12 pm Post subject: |
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already added 
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EstoMax
Encyclopedia-Nissan
Joined: 02 Apr 2005
Posts: 1313
Location: Seattle
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| Posted: Thu Mar 09, 2006 10:48 pm Post subject: |
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| klattr1 wrote: | | already added |
woot
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95 s14 kaT
t3/t04e (60 trim), bikirom, groundzero mani/dp, 82 lb AMS FS
94 d21 kaE 4x4 stock |
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jdm538
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Joined: 07 Feb 2006
Posts: 13
Location: short beach socal
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| Posted: Fri Mar 10, 2006 1:56 am Post subject: |
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| what is the best way to rewire the wire haness? |
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9sec240
Knows Some Stuff About 240's!
Joined: 12 Sep 2005
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Location: Chicagoland IL
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| Posted: Fri Mar 10, 2006 6:29 am Post subject: |
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If you look at the top of your factory pump you will see the terminals are labled + and - ... The black wire from the Walboro goes to the - and the red wire to the +... You will have to cut the factory wires and use the butt connectors supplied with the kit to connect the wires....
One thing to note when installing an S13 Walboro pump kiy in an S14... The fuel pump will need to be positioned correctly to orient the fuel sock in the right direction.. Please see THIS thread for information...
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JGSturbo
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| Posted: Fri Mar 10, 2006 6:35 am Post subject: |
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| 9sec240 wrote: | If you look at the top of your factory pump you will see the terminals are labled + and - ... The black wire from the Walboro goes to the - and the red wire to the +... You will have to cut the factory wires and use the butt connectors supplied with the kit to connect the wires....
One thing to note when installing an S13 Walboro pump kiy in an S14... The fuel pump will need to be positioned correctly to orient the fuel sock in the right direction.. Please see THIS thread for information... |
Can we get the stock Nissan sock to have the same effect 
Its bigger too
I've just back flushed the socks before and not had a problem...
I guess I'll find out this weekend....
A good idea would be to hook a small charger to the FP terminals and connect a long hose to the outlet and feed all your $ gas in to a gas can to drain it completely before you take out the pump.
BUT make sure you have ~2-3 cans if your not on E
And I recommend soldering all connections that way you don't end up with a dead car in the middle of nowhere (@#$% happens).
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s-x addict
Knows Some Stuff About 240's!
Joined: 04 May 2005
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Location: cincinnati, OH
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| Posted: Fri Mar 10, 2006 8:04 am Post subject: |
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has anybody ever had any problems reusing the existing sock? it doesnt' starve the pump from fuel and/or cause extra strain on the pump or anything does it?
I already installed my pump with the exisitng sock but didn't think of these things till I was tightening the bolts on the cover.  |
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EstoMax
Encyclopedia-Nissan
Joined: 02 Apr 2005
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Location: Seattle
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| Posted: Fri Mar 10, 2006 8:38 pm Post subject: |
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existing sock as in the stock one?
i reused my stock one too.. it should flow more than the walbro one because its bigger and therefore has less reistance per amount of fuel..
walbro one doesnt reach far and is tiny so if anyone needs a walbro sock i got one here for ya 
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t3/t04e (60 trim), bikirom, groundzero mani/dp, 82 lb AMS FS
94 d21 kaE 4x4 stock |
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BillKlineVT
Dont Question My Nissan Knowledge
Joined: 13 Oct 2004
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Location: Blacksburg, VA and Barre, VT
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| Posted: Sun Mar 12, 2006 1:44 pm Post subject: |
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I bought a walbro kit that was adapted for the s14 for mine a while back.. I think it was only one place that offered it... longer sock than the s13 one, I believe it was from a prelude or something. Haven't had any issues for the past year and a half with it.
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highoctane
Knows Some Stuff About 240's!
Joined: 11 Dec 2005
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Location: MS
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| Posted: Wed Mar 15, 2006 4:35 pm Post subject: |
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Stated by asad over at freshalloy:
"The S14 setup:
Take a S13 kit, and buy an extra sock from Walbro for the late model (~'97-'9 Honda Prelude."
and BlownDET adds the part number for the Prelude install kit:
"Honda part #400-865
S14 owner's will need to order this one. " |
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pandas14
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| Posted: Sun May 07, 2006 10:37 am Post subject: |
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Thanks for the write-up! It just took me like 35mins.
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silviaks2nr
Dont Question My Nissan Knowledge
Joined: 12 Mar 2006
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Location: Raleigh, NC
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| Posted: Sun Sep 03, 2006 5:02 pm Post subject: |
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| thanks for the write up. took me less than an hour! |
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SHIFT_OneOffS14
Knows Some Stuff About 240's!
Joined: 01 Sep 2005
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Location: Columbia, MO
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| Posted: Fri Sep 29, 2006 3:23 pm Post subject: |
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Great write up! Followed it to a T and my pump is now in and it runs! Thanks for the help!
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cheapster757
Knows Some Stuff About 240's!
Joined: 05 Nov 2006
Posts: 243
Location: Norfolk Va
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| Posted: Thu Nov 16, 2006 8:54 am Post subject: |
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| mucho help! thanks! (took me about 2 hours) i suck.. |
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TanManS14
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Joined: 26 Apr 2006
Posts: 2435
Location: Orlando/Jacksonville, FL
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| Posted: Thu Jan 04, 2007 8:31 pm Post subject: |
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So what's the verdict. I dont have a prelude sock, should I use the walbro one oriented like ivan said, or reuse the stock one?
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Draginzuzu
240sx Wannabe
Joined: 16 Mar 2005
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Location: Orlando FL
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| Posted: Fri Jan 05, 2007 12:11 am Post subject: |
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| Use the walboro one, angle it the same way as stock. Should be good to go. |
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TanManS14
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| Posted: Fri Jan 05, 2007 11:42 am Post subject: |
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Ok, cool. Thanks.
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Aervine
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Joined: 22 Mar 2005
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| Posted: Fri Jan 05, 2007 3:28 pm Post subject: |
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| I don't know if anyone else has had the same problem as me but don't use heat shrink tubing unless they make some kind for gasoline. Mine ballooned up and left the wire exposed and would short out on me. |
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TanManS14
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| Posted: Fri Jan 05, 2007 5:45 pm Post subject: |
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Hmm. Seems to me that would equal BIG BOOM
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sdzeroone
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Joined: 29 Jun 2005
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| Posted: Sat Feb 03, 2007 11:00 pm Post subject: |
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| Aervine wrote: | | I don't know if anyone else has had the same problem as me but don't use heat shrink tubing unless they make some kind for gasoline. Mine ballooned up and left the wire exposed and would short out on me. |
Use a Hair dryer thing (the thingy women use to dry hair with) for heatsrink, or use the side of your soldering iron against the heatshrink until it's nice and snug. double layer the heatshrink if you're paranoid of sparks.
As for reusing the stock sock, use your judgement if its clean then ok, if not I recommend using the Prelude sock listed above. the tiny one included with your walbro will starve the motor on low fuel levels. make sure you buy a new cap from nissan dealership.
Tre Performance sells some good pumps and can be found on ebay & website. Identical to Walbro. www.treperformance.com
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makas14
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Joined: 12 Apr 2007
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| Posted: Mon Apr 16, 2007 12:25 am Post subject: |
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| good write up, thanks for the info, going to do this in a few days. |
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LigouriRd.
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Location: Edgerton Wi.
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| Posted: Thu May 24, 2007 5:36 am Post subject: |
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| Aervine wrote: | | I don't know if anyone else has had the same problem as me but don't use heat shrink tubing unless they make some kind for gasoline. Mine ballooned up and left the wire exposed and would short out on me. |
-I found this out last night while replacing my fuel sock with the one for '97 prelude....dang little tiny s13 style sock making my pump cavitate at a ½ tank. I too had the polyolefin heat shrink on the one wire balloon up and slide off the wire connection. Luckily I used PVC heat shrink on the other wire and it held up fine over the two years that it has been exposed to gasoline.
If you feel the need to solder your fuel pump connections use ONLY PVC HEAT SHRINK TUBING it is the slightly harder plasticy type heat shrink tubing, not the soft rubbery type of tubing.
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Berserker
Dont Question My Nissan Knowledge
Joined: 19 Sep 2006
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| Posted: Sun Jul 08, 2007 9:36 am Post subject: |
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I got my pump, no Foam SLeeve or Tie Wrap come with it...also i got this 2 little connectors to snap the wires together, im guessing bare wire cant be exposed in the gassoline tank with a **** load of gass? arg this is anoying well im going in to see wut i find..
Also i would like to add, i finished my manual conversion, i take out the fuel pump fuse, and the fking pump still works, cant get the car to die out, has this ever happend to any1 else?
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Berserker
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| Posted: Mon Jul 09, 2007 1:35 pm Post subject: |
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Any1 got any suggestions?
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EstoMax
Encyclopedia-Nissan
Joined: 02 Apr 2005
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Location: Seattle
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| Posted: Tue Jul 17, 2007 6:19 am Post subject: |
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its fine if the leads are exposed in the gas tank. as long as they dont get very close they wont spark anything. when you connect the wires use some crimp connectors that have a long piece of insulation around them.
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95 s14 kaT
t3/t04e (60 trim), bikirom, groundzero mani/dp, 82 lb AMS FS
94 d21 kaE 4x4 stock |
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TanManS14
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Joined: 26 Apr 2006
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Location: Orlando/Jacksonville, FL
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| Posted: Sun Jul 22, 2007 3:03 pm Post subject: |
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I've done 3 or 4 walbro installs. And i did one in my NA car. The fuel pump didnt turn on when i went to start it. Everything is hooked up correctly but there's a connector coming off of the float and i cant for the life of me figure out where it goes. Is it somewhere in the tank? I never remember even touching that on my other ones but my buddies were working on that car as well so idk what they did. Anyone?
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fairladyguy
Knows Some Stuff About 240's!
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| Posted: Sat Jun 07, 2008 11:53 am Post subject: |
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| great write up just used it to fix my car, turned out my floater was just float around in the tank. |
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memphis
240sx Wannabe
Joined: 28 Oct 2008
Posts: 194
Location: Chicago/Burbs
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| Posted: Fri Oct 31, 2008 7:50 am Post subject: |
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nice write-up ! yeah always have small amount of gas when changing it... it helps a bit.
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SpoolTool
Driving Mom's Station Wagon
Joined: 07 Oct 2008
Posts: 46
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| Posted: Sat Nov 08, 2008 11:52 pm Post subject: |
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Anybody know how to do the wiring? That would be helpful in this thread
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importdude
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| Posted: Sun Nov 09, 2008 12:14 am Post subject: |
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its only 2 wires
use the supplied crimps |
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SpoolTool
Driving Mom's Station Wagon
Joined: 07 Oct 2008
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| Posted: Mon Nov 10, 2008 5:37 am Post subject: |
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| importdude wrote: | its only 2 wires
use the supplied crimps |
I have a walboro installed on my car and theres 4 wires going to a relay. I bought the car with it installed and I was looking for a more simply way to wire it in as it is now hard wired to a switch..
Knowing the number of wires doesn't help much if you don't know where they go 
I'm gonna re-wire mine soon (busy at school) So I'll post how that goes maybe with some pictures if I get it working properly.
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EstoMax
Encyclopedia-Nissan
Joined: 02 Apr 2005
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Location: Seattle
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| Posted: Tue Nov 11, 2008 12:22 pm Post subject: |
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maybe your car has the walbro 'hard-wired' in. If there is a relay the stock fuel pump power lines might be triggering the relay, which get power straight from the battery to the fuel pump.
Marko
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95 s14 kaT
t3/t04e (60 trim), bikirom, groundzero mani/dp, 82 lb AMS FS
94 d21 kaE 4x4 stock |
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SpoolTool
Driving Mom's Station Wagon
Joined: 07 Oct 2008
Posts: 46
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| Posted: Thu Nov 13, 2008 11:03 am Post subject: |
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| EstoMax wrote: | maybe your car has the walbro 'hard-wired' in. If there is a relay the stock fuel pump power lines might be triggering the relay, which get power straight from the battery to the fuel pump.
Marko |
With that being said how is everyone else wiring their units in?
If there are 2 main wires, one for power and ground, where should I splice the power wire so that it gets 12 volts when the key is on?
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