Changing fuel pump
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Changing fuel pump
Doing H/C and am upgrading my 98 with Racetronix pump and harness, draining the fuel from the tank the first 5 gallons came out real fast.
Now it's real slow drawing a lot of air, is this normal?
Will I ever be able to pull the fuel from the right tank? Or shoud I just pull the pump and change it out?
I had almost a full tank will the right tank bleed over to the left?
Now it's real slow drawing a lot of air, is this normal?
Will I ever be able to pull the fuel from the right tank? Or shoud I just pull the pump and change it out?
I had almost a full tank will the right tank bleed over to the left?
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
I've drained mine several times, and it does the same thing. I have never started with it with much more than a few gallons in it, but I too have always noticed that seems to have a LOT of air (bubbles) in the line instead of a solid fuel stream.
The fuel should not "drain" from the right tank, since it is normally "pumped" over from the right tank
I would just wait and let it drain all the way. It REALLY makes a mess (as well as adding some danger) if you don't get it all out before you pull the pump
The fuel should not "drain" from the right tank, since it is normally "pumped" over from the right tank
I would just wait and let it drain all the way. It REALLY makes a mess (as well as adding some danger) if you don't get it all out before you pull the pump
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
"The fuel should not "drain" from the right tank, since it is normally "pumped" over from the right tank".
So what I'm really pumping out is just the left tank and what's in the right tank will stay there while I change out the pump.
Just wanted to make sure I didn't end up with a slowly filling left tank while I had the pump out.
So what I'm really pumping out is just the left tank and what's in the right tank will stay there while I change out the pump.
Just wanted to make sure I didn't end up with a slowly filling left tank while I had the pump out.
Drifting
Joined: Feb 2005
Posts: 1,770
Likes: 0
From: in ur mirror, 'bout to pass.. CA
Having been down this road a few times, mebbe I can help esplain..
Fuel pump located in left(driver side) fuel tank; fuel sending unit in right (pass side) tank. When running, fuel pump delivers fuel to right side sender, which used venturi principle to suck additional fuel into sending unit, sending it back to the pump.
Gravity drain or forced suction of the right side tank with both lines disconnected will only drain your right tank. Leave the inlet line (top connector) in place, you suck fuel from both tanks. Much more suction needed, and gravity will only take it down level with the units. Still leaves about 3 gals. in the tanks to splash out once you remove the bolts holding the assy's to the tanks. Opening the fuel cap will help alot and you can get almost all of the fuel out of both tanks, at least enough to remove the pump or sender assy's without alot of overspill.
This works with 98-01's; 02-04 has the pump and sender mounted at the top of each tank.
And yea, I'm still fighting with the bonky fuel gauge, even after replacing the pump and sender assy's, sending unit, and right fuel tank...Good Luck!!
Fuel pump located in left(driver side) fuel tank; fuel sending unit in right (pass side) tank. When running, fuel pump delivers fuel to right side sender, which used venturi principle to suck additional fuel into sending unit, sending it back to the pump.
Gravity drain or forced suction of the right side tank with both lines disconnected will only drain your right tank. Leave the inlet line (top connector) in place, you suck fuel from both tanks. Much more suction needed, and gravity will only take it down level with the units. Still leaves about 3 gals. in the tanks to splash out once you remove the bolts holding the assy's to the tanks. Opening the fuel cap will help alot and you can get almost all of the fuel out of both tanks, at least enough to remove the pump or sender assy's without alot of overspill.
This works with 98-01's; 02-04 has the pump and sender mounted at the top of each tank.
And yea, I'm still fighting with the bonky fuel gauge, even after replacing the pump and sender assy's, sending unit, and right fuel tank...Good Luck!!
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
"The fuel should not "drain" from the right tank, since it is normally "pumped" over from the right tank".
So what I'm really pumping out is just the left tank and what's in the right tank will stay there while I change out the pump.
Just wanted to make sure I didn't end up with a slowly filling left tank while I had the pump out.
So what I'm really pumping out is just the left tank and what's in the right tank will stay there while I change out the pump.
Just wanted to make sure I didn't end up with a slowly filling left tank while I had the pump out.
Once it quits pumping fuel, you can pull the left side pump without worrying about any more fuel coming out (after the initial amount "spills out")
Watch your gauge to see when it is out
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
If you ever need to drain the tank more completely, you can take a shop towel and lay it in the floor of the tank and let the end hang out into a can or whatever you wish to catch it with and osmosis will take care of it.
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Well thanks for the help, I got that s*b changed last night.
I think one of the issues was first I started with almost a full tank not a good idea.
Next when my 5 gal can filled up I had to shut off the pump while I emptied the can, this is when it started to pull lots of air when I restarted the pump.
I know the first 5 gal came out a lot faster then the next 7-8 gal did.
I think one of the issues was first I started with almost a full tank not a good idea.
Next when my 5 gal can filled up I had to shut off the pump while I emptied the can, this is when it started to pull lots of air when I restarted the pump.
I know the first 5 gal came out a lot faster then the next 7-8 gal did.
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