C4 Fuel Feed/Fuel Return pipe replacement?
Thread Starter
5th Gear
Joined: Apr 2008
Posts: 5
Likes: 0
C4 Fuel Feed/Fuel Return pipe replacement?
The fuel lines (feed and return) have rusted and are leaking in the gas tank area of my '93 C4. (the pipes between the filter and the tank) I have two questions:
Has anybody out there done this before? I could use some advice.
- Can these lines be removed in one piece?
- Are replacements available for purchase?
Has anybody out there done this before? I could use some advice.
Race Director
Joined: Jun 2004
Posts: 13,969
Likes: 710
From: WI
Well I've been thinking of running new rubber lines, or maybe bending up new metal ones. Then adding in a shut off valve by the filer and changing the stock fuel filter to a screen type cleanable unit. There would be line adapters needed for the fuel rail but it's pretty straight forward. Probably could reuse the stock line spacers/rub stops by the tank. They are very rusty on mine too! I sprayed them with rust converter when I got the car years back and they've haven't progressed much.
Instructor
Joined: Aug 2002
Posts: 152
Likes: 0
From: Westerville Ohio
Replace them with -6 braided lines. You can get fittings to go from hard lines to braided from Jegs or Summit. If you want to replace the factory fuel line with another, you will have to piece it together to go over the rear suspension. 
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Well I've been thinking of running new rubber lines, or maybe bending up new metal ones. Then adding in a shut off valve by the filer and changing the stock fuel filter to a screen type cleanable unit. There would be line adapters needed for the fuel rail but it's pretty straight forward. Probably could reuse the stock line spacers/rub stops by the tank. They are very rusty on mine too! I sprayed them with rust converter when I got the car years back and they've haven't progressed much.
Thread Starter
5th Gear
Joined: Apr 2008
Posts: 5
Likes: 0
I'm about 98% complete with repeating your solution. One question though, after adding the fittings for the braided cable in the "Fuel Level Meter Assembly" area, what did you do with the rubber Filler Neck Housing? It doesn't look like it will fit any longer on mine?
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
