I replace old fuel hoses with the correct hoses and use the same sheathing
as the original, and I use better, specific, fuel clamps than original also.
For the many years I did not come across any 'gummy' substance yet.  As it
did not happen with the originals for the last twenty odd years.
BTW, any of you who did not change it yet, it is time to do it now.  You may
call or make appointments for the three hour job, 425 773 4646 in the
Seattle area.
Zoltan

----- Original Message -----
From: "Bruce Todd" <beeceetee@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, June 25, 2012 8:01 PM
Subject: Fuel line sheath / casing

> Hi guys,
>
> What is the best practice in relation to keeping or disposing of the fuel
> line sheathing which presumably protects the fuel line as it travels to
> the
> fuel injectors across and around the air distribution system in the engine
> compartment?  I remember reading past posts about a weird interaction
> between some nylon fuel hoses and the sheathing which produces a brownish
> residual almost like the hose is melting or slowly disintegrating.
>
> I replaced my fuel lines about four years ago with a good product for fuel
> injection but I'm looking to replace sections of hose again because I am
> noticing areas of this gummy phenomena. I am leaning toward replacing my
> hoses with the knitted / braided cloth FI hose instead of the more
> expensive nylon fuel injection hose and I'm thinking of completely doing
> away with the sheathing.
>
>
> What sayeth the list?
>
> Thanks,
>
> BT
>