Rusted Fuel Lines

[Shark]

Hi Everyone
Does anyone have or can you link a diagram for all the hard fuel lines on my car 1984 Mercedes 300cd Turbo Diesel.
I am going to have to replace all the hard lines with stainless steel ones soon.
I cannot find a picture of the whole parts breakdown from front to rear tank,
Any help would be appreciated.
Thanks

[Diesel911]

The diagram is for a regular W123.

Over the years people haves used Nylon Tubing, Connifer Brake Tubing (high nickel content an they claim you can hand bend it with out kinking) and Rubber Fuel Hose.

The Nylon and Connifer Brake tubing won't rust.

The Guy that used the rubber hose said he left the original tubing in place and used that to run the electrical zip ties around and around to hose. You could do the same with any of the other tubing mentioned.

The nylon tubing is likely the lest expensive. Member funola used to have a bunch of that he was selling off.

[t walgamuth]

I have always just taken off the old ones and match the curves and reinstall, using unions as needed to make a complete job. It is a little intimidating but not too hard once you dive in. They are easily bent with your hands. You must support the inner part of the bend with your thumbs to avoid kinking it.

[5cylinder]

Originally Posted by t walgamuth

I have always just taken off the old ones and match the curves and reinstall, using unions as needed to make a complete job. It is a little intimidating but not too hard once you dive in. They are easily bent with your hands. You must support the inner part of the bend with your thumbs to avoid kinking it.

I concur.

[Mxfrank]

I'd add that you can just cut away the rusted sections and replace with new tubing. Unlike brake lines, you can use simple compression unions on fuel lines.

[Sugar Bear]

Probably have to bend them yourself, doubt pre-bent exists. Stainless is difficult to bend and flare. Consider using nickel copper lines (ni-cop). Before using them confirm they are compatible with fuels.

Good luck!!!

[BWhitmore]

According to the manufacturer ni cop tubing is fine for fuel. Also compression fittings work well on ni cop tubing.

[Sugar Bear]

It is durable and easy to form.

[Shark]

All the Fuel and Brake lines were rusted out completely.
I will try to replace all of them with Stainless Steel ones and get pictures and make a nice thread.
This will be interesting.
Thanks for the info and picture.

[BWhitmore]

Stainless steel tubing is VERY difficult to work with. It is recommended that nickel copper (Ni-cop) tubing be used. This tubing is easy to form and will outlast the life of the car.