Re: [diesel_mercedes] Re: replacing fuel lines on the 300sdl

 

On 7/18/2011 5:27 AM, griegiry wrote:

 

thanks, i gather you are referring to injector overflow lines? i was told fuel tank to engine lines, but that the tank is ok and does not have a leak, but that leak is in tank area. do i have to yank tank?

--- In diesel_mercedes@yahoogroups.com, Bobby Yates Emory <liberty1@...> wrote:
>
> New,
>
> What usually goes bad are the fuel return lines. There are five or so.
> When I replaced one, enough fuel return line to do all of them was less than
> $10 at a MB dealer. (Still pretty expensive for 2 1/2 feet or so of small
> tubing.)
>
> Doing it is no big deal - do one at a time - remove the old one - cut a
> matching one from the new tubing - install - repeat. There are no clamps to
> fiddle with - just slide the old tubing off and slide on the new tubing.
>
> Other people have advised not to substitute another type of tubing - get the
> real thing from MB.
>
> Bobby
>
>
> On Sun, Jul 17, 2011 at 10:25 PM, <newdlhead@...> wrote:
>
> > **
> >
> >
> > i may have found an sdl. owner was told it needs new fuel lines. i was
> > told she weeps from the rear(graphic!) is this a big project? she has been a
> > sittin' two years, he says ac works. .what's the drill, anyone care to
> > point me to a previous post to save breath?
> >
> >
> >
>
>
>
> --
> Toward freedom,
>
> Bobby Yates Emory
>

If it leaks from the rear its probably rusted fuel lines usually over the rear sub frame , but doable  The right way once you have found the leak is to replace that part of the line, dropping the rear sub frame down for access if necessary.  I've usually just cut in a length of rubber fuel line and worked it through the area.  It all depends on where the leak is.  The other leak point is the mounting points that hold the lines up.  The lines will frequently leak there since the rubber supports will hold water.  One thing to watch is the brake lines.  If the fuel lines are leaking the brake line may be rusting also.  The brake line has to be repaired with a least a double flange if not a bubble flange coupling.

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