RS4 fuel pump versus stock fuel pump pictures and install tips

~~Mike@VAST~~ · 01-03-2003, 07:30 PM

If you want to know how to remove the pump, it's inside the trunk, underneath the carpet and a black, circular disc with 3 phillips head screws. Take the disc off, then disconnect the connector by pulling straight up. Then, remove the fuel feed and return lines (be sure to relieve the pressure in the fuel system first). You can relieve the pressure by cranking the car with fuse #28 removed (fuel pump)...or, just disconnect that connector and crank the car over and let it die.

Then, you're going to need to spin that plastic retainer ring off the outside of the pump. Just take a big screwdriver and a hammer and go at it. It's a normal right hand thread. Just place the screwdriver on one of the nubs, then hit it with the hammer. Keep doin that til it's loose. Don't slip. The fuel tank is RIGHT there

. Don't ruin the nubs.

After that's off, the pump lifts right out (it's sealed with a big rubber o-ring. Disconnect the black electrical connector from the pump. Disconnect the fuel return line from the pump (small flathead screwdriver may help here). After that, time to remove the pump from the holder in the tank. You can use a special too, which i don't have, or, you can take a short box wrench and get it between two of the slots on the base of the pump and twist it left.

After the pump is loose, it pulls right out. Be sure to get the lines out of the way before you pull it out and don't break the float for the fuel level. Install is reverse of removal. It's a good idea to make yourself a thin, plastic guide to push the lines out of the way as you drop the new pump in. Also, mark the pump above the locking slots (around those top cutouts where you put the wrench) so that you can align the pump properly. Be sure to note the orientation of the old pump before you pull it out.

The RS4 pump needs to have the extra line plugged or else the car will not run. I don't know the flow rate on that pump. I'm sure it can be used as a stock S4 replacement though. It doesn't use that cheesy debris sock like the standard s4 does.

Some other tips....

wear gloves
get good ventilation
keep any loose parts away from the tank's hole

see the extra line on the left of this rs4 pump? it needs to be plugged

rs4 fuel pump,left, versus stock, on the right

Clandestine · 01-03-2003, 07:32 PM

DarinS4Turbo · 01-03-2003, 07:33 PM

WoostaS4 · 01-03-2003, 07:34 PM

~~Mike@VAST~~ · 01-03-2003, 07:35 PM

my friend was talking to me about his s4....said "you can't get a girlfriend because my car will remain slow"

~~Mike@VAST~~ · 01-03-2003, 07:35 PM

i did a rough calculation before and came up with rates close to what they posted

WoostaS4 · 01-03-2003, 07:35 PM

xr8edS4 · 01-03-2003, 07:37 PM

~~Mike@VAST~~ · 01-03-2003, 07:41 PM

rs4 injectors they are supplying are ~480 cc/minute and there's 6 of 'em...at around 4 bar base before boost, you're talking a needed feed of 2880 cc/min, or, 2.88 litres per minute. if someone can clarify the rs4 injector rates @ X pressure, that would be nice

Mike

Singletrack · 01-03-2003, 07:43 PM

yeah you sure did.

High piggie.

-st

01-03-2003, 07:30 PM	#1
~~Mike@VAST~~ Banned Account #: 21977 Join Date: Jul 2001 Posts: 19,481	RS4 fuel pump versus stock fuel pump pictures and install tips If you want to know how to remove the pump, it's inside the trunk, underneath the carpet and a black, circular disc with 3 phillips head screws. Take the disc off, then disconnect the connector by pulling straight up. Then, remove the fuel feed and return lines (be sure to relieve the pressure in the fuel system first). You can relieve the pressure by cranking the car with fuse #28 removed (fuel pump)...or, just disconnect that connector and crank the car over and let it die. Then, you're going to need to spin that plastic retainer ring off the outside of the pump. Just take a big screwdriver and a hammer and go at it. It's a normal right hand thread. Just place the screwdriver on one of the nubs, then hit it with the hammer. Keep doin that til it's loose. Don't slip. The fuel tank is RIGHT there . Don't ruin the nubs. After that's off, the pump lifts right out (it's sealed with a big rubber o-ring. Disconnect the black electrical connector from the pump. Disconnect the fuel return line from the pump (small flathead screwdriver may help here). After that, time to remove the pump from the holder in the tank. You can use a special too, which i don't have, or, you can take a short box wrench and get it between two of the slots on the base of the pump and twist it left. After the pump is loose, it pulls right out. Be sure to get the lines out of the way before you pull it out and don't break the float for the fuel level. Install is reverse of removal. It's a good idea to make yourself a thin, plastic guide to push the lines out of the way as you drop the new pump in. Also, mark the pump above the locking slots (around those top cutouts where you put the wrench) so that you can align the pump properly. Be sure to note the orientation of the old pump before you pull it out. The RS4 pump needs to have the extra line plugged or else the car will not run. I don't know the flow rate on that pump. I'm sure it can be used as a stock S4 replacement though. It doesn't use that cheesy debris sock like the standard s4 does. Some other tips.... wear gloves get good ventilation keep any loose parts away from the tank's hole see the extra line on the left of this rs4 pump? it needs to be plugged rs4 fuel pump,left, versus stock, on the right

01-03-2003, 07:33 PM	#3
DarinS4Turbo AudiWorld Senior Member Account #: 16111 Join Date: Feb 2001 Posts: 2,174	Thanks Mike - do we know flow rating of S4 fuel pump?

01-03-2003, 07:34 PM	#4
WoostaS4 Junior Member Account #: 41621 Join Date: Aug 2002 Posts: 1,750	So actually how much more fuel is pumped and how much more combustion ? If ya don't mind =) __________________ Just call: " Oh Lord Jesus!" He'll get into your heart . . .

01-03-2003, 07:35 PM	#5
~~Mike@VAST~~ Banned Account #: 21977 Join Date: Jul 2001 Posts: 19,481	haha..i know! i actually gave it to my dad. that's why i have no girlfriend...best comment.... my friend was talking to me about his s4....said "you can't get a girlfriend because my car will remain slow"

01-03-2003, 07:35 PM	#6
~~Mike@VAST~~ Banned Account #: 21977 Join Date: Jul 2001 Posts: 19,481	i have no idea. some others have posted though.....do a search. i did a rough calculation before and came up with rates close to what they posted

01-03-2003, 07:32 PM	#2
Clandestine Junior Member Account #: 35288 Join Date: Apr 2002 Posts: 1,895	sexy flannel man! __________________

01-03-2003, 07:35 PM	#7
WoostaS4 Junior Member Account #: 41621 Join Date: Aug 2002 Posts: 1,750	ROFL !!! __________________ Just call: " Oh Lord Jesus!" He'll get into your heart . . .

01-03-2003, 07:37 PM	#8
xr8edS4 Senior Member Account #: 24554 Join Date: Aug 2001 Posts: 8,614	35 bucks for RS4 fuel pump. :-) __________________ 07 RS4 Daytona Gray/Onyx 01 S4 Brilliant Black/Onyx... 6 spd Rowing Machines.

01-03-2003, 07:41 PM	#9
~~Mike@VAST~~ Banned Account #: 21977 Join Date: Jul 2001 Posts: 19,481	i have no idea what the specs are...i just installed it...but, you gotta figure....if the rs4 injectors they are supplying are ~480 cc/minute and there's 6 of 'em...at around 4 bar base before boost, you're talking a needed feed of 2880 cc/min, or, 2.88 litres per minute. if someone can clarify the rs4 injector rates @ X pressure, that would be nice Mike

01-03-2003, 07:43 PM	#10
Singletrack AudiWorld Super User Account #: 25380 Join Date: Sep 2001 Posts: 16,037	Admit it, you smelled the gloves after...you did... yeah you sure did. High piggie. -st __________________ 2008(9?) S5 - ordered 3/29/08 2004 Subaru Impreza WRX STi 2000 A6 2.7T - Sold "On the run from Johnny Law; ain't no trip to Cleveland."

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