Hello everyone, I am pretty new when it comes to working on cars and I have acquired an 84 Corvette and I have noticed that my fuel lines are rusted. I have replacements but am unsure as to how actually replace them. Any advice is wanted and welcome, thank you very much!

 

I have replaced my fuel lines on my 1985 Corvette.

I am not exactly sure on what you have for replacement fuel lines, but I will try to share some information from my direct experience and hopefully others will chime in too with some value add information as that's what we do here on the Corvette Forum Family !

The fuel line that I replaced started at the connection point on the passenger side frame (top of frame in the engine bay near the exhaust manifold). Then the fuel line proceeds along the inside of the frame on the passenger side towards the gas tank. While I was replacing the fuel line, I replaced the inline fuel filter which is situated inside the passenger side frame beneath the passenger side door area.too as well.

I suggest taking your replacement fuel line or lines and mock them in relation to your existing fuel lines to make certain the bends and connection points are similar or, more importantly, exact to the lines on the car. Also, take note of the condition of your hardware and clips that fasten the fuel line to the frame as they may require replacement due to rust, corrosion and/or wear.

You may have to clean the frame and fuel line area to ensure there are no unneccessary debris or obstructions. Once the frame and fuel line area are clean, you have lots of good lighting to see, and you have taken sufficient time to carefully familiarize yourself with all the connection points to remove and replace as required; then you are likely ready to start the procedure. WD-40 may be needed for the rusted connectors or other.

I hope this is beneficial and a reasonable starting point for you. Perhaps, prior to starting, search some how-to videos as there's lots of time and effort already spent making our Corvette repairing life easier !!!

 

Where specifically are they rusted? The fuel lines travel from the tank (just under the fuel lid) all the way to the engine block and throttle bodies. They tend to be far more rusted in the rear.

I'd like to know how rusted they actually are... can you post pictures? Generally, these fuel lines are pretty thick, and are also low quality stainless. What I would be worried about though, are the rubber lines that connect them. There are a host of rubber lines all over the car:
- Under the fuel fill lid: pressure, return, vent rubber lines.
- Under the passenger side door: pressure x2 (each side of the fuel filter)
- Engine compartment, passenger side: pressure, return lines


Here's by the fuel filter:





Under the fuel filler rubber cover:





And if you look under the A/C compressor, the rubber lines as they connect the body to engine lines:




The car was basically ready for the junkyard, so pay no mind to the areas that are looking like ***... it'll eventually get cleaned up.