So my 91 dakota developed a slight leak on one of the fuel lines (it's right in the middle of a clip that holds it to the frame so I can't quite tell if it's a feed or return) and I need to patch it. I'm thinking about getting regular high pressure fuel line and running it from the fuel filter, which has a regular nipple on it, to the throttle body, which also has a nipple. I'd rather get a new steel line and fix it properly but I can only find full kits for ~$200. The pressure line after the filter is an easy enough replacement but return lines and feed from tank are going to be difficult.
Any ideas if a rubber line would work fine? The stuff I can get is rated for 220-something psi while the pump only puts out like 45.

 

If it's a 1991, the system should be at 14.5PSI max unless the regulator's gone bad at the throttle body.

I'd use nylon AND I'd put some armouring around it; I lost the nylon fuel lines on my 1991 Cougar one night when a road lizard jumped out in front of me (chunk of 18 wheeler tire ... at least THIS one was low. One took out my windshield a few years earlier ...)

If you lift the bed, you should be able to put a small bubble flare on the line to give the hose something to seal against, and use new cupro-nickel line (although that also should be armoured; it's not as tough as stainless when rocks fly).

BTW - you STILL should use EFI hose for the fuel line if you go rubber; the regular rubber hose won't like even 14.5psi, much less 45psi.

RwP

 

What about steel brake line? I can flare the ends and clamp rubber on for the filter and t-body (similar to factory). I know pvf and copper line don't like gas but I'm curious is just regular old steel works.

 

Regular steel does work; cupro-nickel (aka "Nickel copper") is just easier to work.

RwP

 

Doesn't rust out as quickly either.