How to remove/re-make these fittings ?

[Quickstep192]

I’m preparing to replace my fuel pump and replacing the lines “while I’m in there” seems prudent.

There are these crimped connectors where the lines transition from hose to solid before they pass through to the engine compartment.

What’s the best way to get these apart and how should they be re-made?

[pkabush]

Take them to a hydraulic fitting shop and ask if they’ll crimp em up for you

[Quickstep192]

That was my plan, but I don't know how to remove then.

[bahman]

If your lines are originals, be very careful working around the fabric-braided rubber lines. They can be very brittle and slightest clamping force to wiggle them causes them to disintegrate. New OE parts from Porsche now use rubber hoses, which are much more advanced technology and more durable.

I've been there.

[Quickstep192]

Originally Posted by bahman

If your lines are originals, be very careful working around the fabric-braided rubber lines. They can be very brittle and slightest clamping force to wiggle them causes them to disintegrate. New OE parts from Porsche now use rubber hoses, which are much more advanced technology and more durable.

I've been there.

Oh yeah! I was nervous while I was just looking at them! That’s why I’m planning to replace them. I just don’t know how to remove those fittings without screwing something up.

[GH85Carrera]

I am not sure about your car, but on the later models the firewall has connectors.



They are a real pain to get on and off if the engine is in place.

Contact Len Cummings. He makes new lines that are ethanol proof, and will last longer than your ownership of the car.

He may well know where the connecting is.

Should I replace theses brake and fuel lines?

[BoxsterGT]

These appear to be original 73 vintage hose with crimps for Fuel Injection.

You will have to cut the hose to remove them. I might add, at this age these are a hose failure waiting to happen.


Once removed, why not re-route your new hose as the factory did for ALL later 911 models from 1975 on.....



With this hose routing through the Left corner (Red Arrow) of the engine bay, a one-piece hose can be used thus eliminating the multiple connections and possible source of leaks.

No matter the pump location at the rear or up front, this upgrade can be done.

I am happy to help, but please email only. Cannot send photos by pm.

len.cummings @ verizon.net



PS- Thank you GH for the kind words.

[Quickstep192]

Any tips for fishing the tubing through the tunnel?(with the engine and carpet still in the car)

[mgro1959]

If you get Len’s hoses they are two piece which makes life so much easier when installing. He provides a coupling which you connect the new hose to old one. As you pull old line out your drawing in the new line at same time way easier then trying to fight with the porsche factory one piece line. Thanks Rob.

[LM3929]

and if you listen to the person helping you on marking which hose/fitting goes where you won't pressurise the return line, right mgro1959

[BoxsterGT]

Came across this from Quickstep192 while going over old fuel line posts:

"Any tips for fishing the tubing through the tunnel? (with the engine and carpet still in the car)"

I have a pretty good list of tips for replacing the tunnel lines even on the very early 911s with steel tunnel lines.

I am happy to send this by email to any one who asks, and I will post same when I get caught up with my tasks, if ever. The winter weather along with my age and bad habits seem to be getting to me.

Len