Replacing metal fuel line with rubber line?

Dohc32vMarkVIII

New Member
Mar 31, 2005
58
0
0
The fuel line on my 85 GT has a slight hole in it, and I want to replace it. It's a hard fuel line, and I want to know if I can replace it with a 3/8'' rubber fuel line, and what fittings I will need on either end to do this. The car is an 85, so it should have a mechanical pump, and I think I should only need around 3 feet of rubber to replace the hard line. Has anyone done this? Is it a bad idea to replace the hard line with a rubber one?

Another thing is accessing the other side of the fuel line. I can't see the mech fuel pump, and it looks like I would have to remove a bunch off of the front of the motor to get at it. I only have the weekend to do this, and I need the car on Monday. Can I splice in a rubber line to patch the area with the hole in it? Does anyone have any pictures of how it goes together or where the fuel pump is on the motor?
 
  • Sponsors(?)


8950HO

New Member
Mar 31, 2005
658
2
0
If the car is carburated,splicing in a rubber fuel line hose is a very common repair.

There is no pressure in the fuel line from the tank to the fuel pump in a carburated application.
 

Fett

New Member
Nov 2, 2004
766
0
0
As long as you use high pressure fuel line, the line itself will hold up. The problem is getting it to hold on to the two ends of the metal line. If you cut out a section you will have two bare ends of metal line, and no ribs to hold the rubber line on with. You will end up using regular hose clamps...which I wouldn't trust.

I had to fix the same problem on my underbody lines, for the time being I had a shop weld on some ribs and used two clamps. It holds fine now, but I still don't like the idea. Finding good metal lines is hard, nobody wants to ship them without folding them.

You can also opt to use compression fittings and replacement metal. That is going to be my permenant fix shortly, good compression fittings will not leak and will hold just fine under pressure.
 

PoopDawg

Autozone Junkie
Founding Member
Jun 21, 2002
1,497
12
49
38
Orlando, FL
Yes, you can do that. All you need is some regular hose, because 85 was either CFI which used very low pressure (13-15 psi if I remember correctly) or carbed, is like 4 psi, but no pressure before the pump... Just get flare tool kit. Flair the ends and use hose clamps. That will be plenty to hold it.
 

HISSIN50

"How long does it take to get help in here?
SN Certified Technician
Nov 29, 1999
31,179
27
129
Thought not perfect, I've done repairs like you need to do before. It sounds like accessing the area is a toughie - otherwise you can bend your own metal line.

Once done, do keep an eye on it to make sure it doesnt leak.

Good luck.
 

Shakerhood

15 Year Member
Oct 28, 2004
3,266
167
114
Ohio
I am in the process of replacing my feed line on my 92 with Nylon Fuel Tubing, its pretty awesome stuff and the cost was reasonable a $2.50 a foot, the only expesive parts were the Factory Ford Fittings to fit the fuel rail and the fuel filter.
 

Dohc32vMarkVIII

New Member
Mar 31, 2005
58
0
0
The only line I want to replace is the line from the mech fuel pump on the motor to where it connects to the carb, it can't be more than 2ft. I think I'll go outside tomorrow, take a look at it, and maybe give it a shot.
 

Roland69

Sergeant Tangnet
Sep 17, 2005
2,869
1
58
37
Port Elgin, Ontario
I did it on my feed line on my old tempo all I did was cut the rotten chunk out and doubble clamped a piece of high pressure line on both ends. worked for 2 years and I sold it over a year like that and it's still on there.
 

Modular2v

Founding Member
Jun 30, 2002
3,217
23
99
oklahoma
when i did my carb conversion i ran 1/2 inch fuel line all the way from the tank to the regulator then 3/8 from the regulator to the tank...i have an electric fuel pump of course but same principle
 
Thread starter Similar threads Forum Replies Date
R Can you replace metal fuel line with rubber hose under by the gas tank? 1996 - 2004 SN95 Mustang -General/Talk- 1
arbailey Anyone replace their metal fuel lines yet? Fox 5.0 Mustang Tech 4
B Needing help on the best way to tackle alot of sheet metal replacement 1965 - 1973 Classic Mustangs -General/Talk- 2
KENS89LX replacement metal for foxbody Fox 5.0 Mustang Tech 0
C Replacing frame rails and some other metal work Classic Mustang Specific Tech 3
mustangkid2.3 metal armrest latch replacement? where to get it? 2.3L (N/A & Turbo) Tech 2
LILCBRA Oil pan gasket change OR starter replacement in a 302 II 1974 - 1978 Mustang II Talk & Tech 3
J Engine replacement advice 4.6 1996 - 2004 SN95 Mustang -General/Talk- 0
0 Replace o2 sensors or not? SN95 4.6L Mustang Tech 0
realtex Electrical AC clutch cycle switch replace 1994 - 1995 Specific Tech 1
calmlikeabomb 96 Cobra power steering issue... what is this line? can I replace it? SVT Tech Forum 0
1989FoxFan Interior and Upholstery [Solved!] Should I replace the pads and cables for my top 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 1
B Paint and Body '86 Four Eye Headlight Fiberglass Assembly - Repair or Replace? Fox 5.0 Mustang Tech 4
90sickfox DUSTY'S New Start After Intake Replacement Digital Self-tuning Forum 3
T Exhaust Replacing cats with O/R x pipe and need a tuner Fox 5.0 Mustang Tech 6
pats91 Paint and Body Floor Pan Replacement - Can a SN95/New Edge floorpan be used in a Fox Fox 5.0 Mustang Tech 4
M Engine Knocking nosie after replaced upper intake manifold SN95 4.6L Mustang Tech 4
Foxslider Foxbody junkyard direct replacement axles 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 41
A Transmission Replacement Question SN95 V6 Mustang Tech 1
schelini Motor mounts replacement 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 9
F Engine Lifter Replacement (W/ heads off) questions SN95 4.6L Mustang Tech 1
C How do you replace the trunk latch on your mustang for a 1977 1974 - 1978 Mustang II Talk & Tech 8
V Autolite 4100 Secondary Diaphragm Lever replacement 1965 - 1973 Classic Mustangs -General/Talk- 2
Mantoga320 Replaced my Fox steering rack, not happy 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 14
U Engine Replacing the gasket on a gt40 head need some advice Fox 5.0 Mustang Tech 36
1989FoxFan Interior and Upholstery How to replace convertible top frame rails Fox 5.0 Mustang Tech 2
1989FoxFan Interior and Upholstery Are there any good videos or guides for replacing convertible top Fox 5.0 Mustang Tech 6
R Replacement break pads for 17 PP 2015+ (S550) Mustang -General/Talk 1
zack2001 Grille fasteners/clips won't move (Trying to replace the horn) 2005 - 2009 Specific Tech 0
A 66 Coupe- Inner Rocker Replacement tips/tricks 1965 - 1973 Classic Mustangs -General/Talk- 9
gearhead77 Fuel Fuel Injector replacement Fox 5.0 Mustang Tech 23
K Gauge replace 2005 - 2014 S-197 Mustang -General/Talk- 1
B Crank no start 99 4.6 . Gets fuel, obd read p0606 not sure to replace pcm SN95 4.6L Mustang Tech 1
cadeblade99 01 GT Convertible Top Replacement 1996 - 2004 SN95 Mustang -General/Talk- 3
S Best 99-04 Mustang GT clutch kit replacement? SN95 4.6L Mustang Tech 1
H Help Please on 1999 Saleen front/rear shock/strut replacement 1996 - 2004 SN95 Mustang -General/Talk- 2
D Replacing Windsor 4.6 with a Romeo 1996 - 2004 SN95 Mustang -General/Talk- 1
D AC Evaporator Replacement 68 Classic Mustang Specific Tech 2
D Replacing manual 4.6 motor with one from an automatic 1996 - 2004 SN95 Mustang -General/Talk- 2
B Replacing front struts 1996 - 2004 SN95 Mustang -General/Talk- 10
B Paint and Body replacing door hinges and pins Fox 5.0 Mustang Tech 5
B 2000 GT Muffler Replacement SN95 4.6L Mustang Tech 0
1 Fuel Gas Tank Replacement Parts Checklist - Where to buy? - 1987 Notchback Preservation Fox 5.0 Mustang Tech 11
ragtop88 Engine Fox Body Oil Pump Replacement Fox 5.0 Mustang Tech 6
D Convertible Top Replacement - Charlotte Other Auto Tech 0
C Instructions on how to replace my convertible top. 2005 - 2014 Specific V6 Tech 4
A RED/GREEN Vacuum line broke, Need replacement link 1996 - 2004 SN95 Mustang -General/Talk- 3
D ignition replacement for 2001 mustang 1996 - 2004 SN95 Mustang -General/Talk- 2
C New Control Arm VS Replace Bushings & Ball Joint 1996 - 2004 SN95 Mustang -General/Talk- 10
P Fuel Fuel Leak after replacing fuel filter SN95 4.6L Mustang Tech 4
Similar threads