Do I need to replace the fuel distributor lines in my CIS system? Options

[messick]

So, in my quest to get my "sitting for 15 years" 914 back on the road, I've already ordered new SS tunnel lines and new rubber line for the tank side and for connecting to the fuel pump, and for the connecting back to the return line tunnel hose.

Most of the engine bay stuff is already metal (or at least not just regular rubber fuel line) and looks fine. However, the lines between the fuel distributor and the injectors themselves is just plastic. Should I replace those outright? Checking other forums, and the fact that no one seems to just sell a kit to replace those lines, gives me the impression that those should only be replaced if they are actively leaking.

But, with that recent fire, I figured I'd ask here since I'm already in the middle of replacing lots of the fuel line stuff anyway.

[Superhawk996]

CIS fuel line

https://www.partsklassik.com/Porsche-911SC-...AyABEgJ5rfD_BwE

CIS Banjo fittings
https://www.partsklassik.com/p-1549-banjo-f...mide-lines.aspx

Complete line with fittings
https://www.partsklassik.com/Porsche-911-19...BiABEgJtefD_BwE

(IMG:style_emoticons/default/welcome.png)

[mepstein]

Is this a 2.7 or 3.0 six? You might need to have the FD and WUR rebuilt. They don't do well when left to sit for a long time. If you need it done. I have a contact for a well known rebuilder who does it for a lot of the well known engine gurus. Not cheap but less expensive and better results than the supply houses that offer the service.

[messick]

Is this a 2.7 or 3.0 six? You might need to have the FD and WUR rebuilt. They don't do well when left to sit for a long time. If you need it done. I have a contact for a well known rebuilder who does it for a lot of the well known engine gurus. Not cheap but less expensive and better results than the supply houses that offer the service.

It’s a 3.0L

[mepstein]

Is this a 2.7 or 3.0 six? You might need to have the FD and WUR rebuilt. They don't do well when left to sit for a long time. If you need it done. I have a contact for a well known rebuilder who does it for a lot of the well known engine gurus. Not cheap but less expensive and better results than the supply houses that offer the service.

It’s a 3.0L

If you can't get the engine to run correctly, contact me for Tony Donato's number. (IMG:style_emoticons/default/beerchug.gif)

[porschetub]

So, in my quest to get my "sitting for 15 years" 914 back on the road, I've already ordered new SS tunnel lines and new rubber line for the tank side and for connecting to the fuel pump, and for the connecting back to the return line tunnel hose.

Most of the engine bay stuff is already metal (or at least not just regular rubber fuel line) and looks fine. However, the lines between the fuel distributor and the injectors themselves is just plastic. Should I replace those outright? Checking other forums, and the fact that no one seems to just sell a kit to replace those lines, gives me the impression that those should only be replaced if they are actively leaking.

But, with that recent fire, I figured I'd ask here since I'm already in the middle of replacing lots of the fuel line stuff anyway.

What engine do you have ? ,I had my fair share of experience with CIS and have never seen the stainless braided S/S ones fail but the straight plastic ones are less robust and more prone to wear but still durable if not damaged.
The pure plastic lines are made of Polyamide and are fairly easy to replace if damaged,the banjo ends are barbed "push lock" fitting and reuseable so no swaging is required unlike the metal to rubber lines.
Any rubber lines are prone to going hard and cracking/splitting and must be replaced and require specialist attention to replace hoses or buy new for $$$$.

[Dominic]

So, in my quest to get my "sitting for 15 years" 914 back on the road, I've already ordered new SS tunnel lines and new rubber line for the tank side and for connecting to the fuel pump, and for the connecting back to the return line tunnel hose.

Most of the engine bay stuff is already metal (or at least not just regular rubber fuel line) and looks fine. However, the lines between the fuel distributor and the injectors themselves is just plastic. Should I replace those outright? Checking other forums, and the fact that no one seems to just sell a kit to replace those lines, gives me the impression that those should only be replaced if they are actively leaking.

But, with that recent fire, I figured I'd ask here since I'm already in the middle of replacing lots of the fuel line stuff anyway.

I my many years of owning VW's with CIS, I have only had one S.S. braided plastic CIS fuel line (one of the lines going to the Warm Up Reg) fail in my VW Rabbit Caddy, if you smell any fuel in the engine compartment when the engine is running, start moving the lines around until you find the leak. It was tricky to find inside of the braided line..

The bare (plastic) lines were stock in many 911's with CIS. Easier to see any damage. But, if you want piece of mind, you might want to replace any lines that have signs of wear or damage...they are all over 40 years old.

[messick]

So, in my quest to get my "sitting for 15 years" 914 back on the road, I've already ordered new SS tunnel lines and new rubber line for the tank side and for connecting to the fuel pump, and for the connecting back to the return line tunnel hose.

Most of the engine bay stuff is already metal (or at least not just regular rubber fuel line) and looks fine. However, the lines between the fuel distributor and the injectors themselves is just plastic. Should I replace those outright? Checking other forums, and the fact that no one seems to just sell a kit to replace those lines, gives me the impression that those should only be replaced if they are actively leaking.

But, with that recent fire, I figured I'd ask here since I'm already in the middle of replacing lots of the fuel line stuff anyway.

I my many years of owning VW's with CIS, I have only had one S.S. braided plastic CIS fuel line (one of the lines going to the Warm Up Reg) fail in my VW Rabbit Caddy, if you smell any fuel in the engine compartment when the engine is running, start moving the lines around until you find the leak. It was tricky to find inside of the braided line..

The bare (plastic) lines were stock in many 911's with CIS. Easier to see any damage. But, if you want piece of mind, you might want to replace any lines that have signs of wear or damage...they are all over 40 years old.

Yeah, definitely going to have a buddy or two with a flash light and/or fire extinguisher on hand the first time I turn on the fuel pump after I get all the hoses hooked up. I was just wondering if the CIS hoses were on the "immediately replace before putting fuel in the tank, no matter what" list like the rubber hoses and plastic tunnel lines are. But, sounds like they are not.

Thanks all.

[sixnotfour]

1981 Porsche started steel lines..