Replace Fuel Line Question

[bradycat]

Hello,

I have possible 2 lines that are corroded, and I can smell gas from one of them, but it's not leaking yet.

This is located on the lines under the driver's seat.

Can I just cut out the line, enough to put a replacement pc of metal line with connectors? or would neoprene be better?
I am not familiar with fuel lines and can't find much information on how to replace sections or if this is something I can do.

Please help ASAP, so I can get it fixed ASAP.

 

Also which is the best online site for return and feed metal gas lines??? that has good prices

[rockfangd]

Welcome to the forum

 

You have a few options.

You could splice in a steel line

splice in a koni line. Better

Or a neoprene fuel line (best)

If you do not want to replace the entire line you can cut the line and use compression fittings or flare fittings.

 

They also sell steel to neoprene compression fittings. 

That is what I typically use. I prefer neoprene lines as they are nice and flexible. easy to route, and wont rot.

Typically supply line is 3/8

return line is 5/16

 

but in some cases both supply and return are 5/16. 

vent is always 1/4

Edited April 15, 2017 by rockfangd

[Schurkey]

Double-wall seamless steel tubing has a longer service live, less prone to rock damage, isn't porous like rubber hose, weighs less, usually costs less...it's insane to use rubber hose where metal or approved hard-plastic tubing will suffice.

 

Don't get me started on folks that use generic "fuel hose" intended for carburetor (~7 psi) systems on fuel injection (~45+ psi) applications.

 

Typical brass compression fittings are not DOT approved for fuel systems.  This is why all older metal fuel plumbing is double-flared.  There are clever modern work-arounds as used by the OEMs (hard plastic tubing, steel-braid-over-rubber hose permanently crimped onto the associated fittings, etc), but double flared "patches" with inverted flare brass adapters/unions is about as good as it gets, short of replacing the entire section of tubing.

[Imp558]

Last time I bought a roll of steel fuel line I believe it was $15 or so. We don't even know what car he has though, it could be a Renault Alliance for all we can tell from his 1 post.

[rockfangd]

I would not consider rubber. I used to but not for fuel injection.

I figured as long as it was A W-body I could get it close to right.

A year make and model would help though