When was the last time you replaced ALL your fuel hoses?, How long has it been?! Options

[VaccaRabite]

Over the past few weeks I've been replacing my fuel hoses.

Well, it started 2 years ago when I put in the new engine, I decided it was a good idea to replace all the engine bay fuel lines, even though the hoses there had "just been replaced".

While doing my brake master earlier this month I chose to pull the gas tank and just do the res hoses on my work bench. Which exposed all my under tank gas lines. Those are still new, right? I replaced those not long ago. 2014? Oh crap those are 10 years old.

And what does "new" gas line look like? Mostly fine, except where it had dry-rotted and was weeping fuel. And this was not cheap hose. This was expensive Continental SAE 30r9 injection hose.

So I replaced it all. Put the tank back in. Backed the car out into the drive way and just let it idle while I looked for leaks. Found a leak under the engine bay. I forgot about the hoses that went from the center tunnel to the engine compartment hard lines. And while wiggling my tunnel hard line I had opened up a dry rot crack. So I got more 30r9 fuel line and replaced those lines. Now I'm leak free.

I bet a LOT OF YOU have fuel lines older then a decade. If you aren't sure, then its time. Replace your fuel lines! Fire is BAD.

Zach

[technicalninja]

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Nother thing to keep in mind...

Modern fuel has ethanol.

15-20 years back they were putting MTBE in it.

40 years back they were adding lead.

This mish-mash of vastly different additives effects rubber in different ways.

It ALSO effects plastic as well.

I'm changing all of my lines INCLUDING the plastic puppies in the tunnel because of this.

If you're still fuel injected it's MORE important IMO as higher pressure "finds" leaks sooner rather than later.

[VaccaRabite]

I'm changing all of my lines INCLUDING the plastic puppies in the tunnel because of this.

Anyone who leaves the plastic lines in the tunnel are literally playing with fire IMO. All cars that have them still need to be replaced with stainless or Nicklecopper hardlines.

Zach

[rjames]

I'm changing all of my lines INCLUDING the plastic puppies in the tunnel because of this.

Anyone who leaves the plastic lines in the tunnel are literally playing with fire IMO. All cars that have them still need to be replaced with stainless or Nicklecopper hardlines.

Zach

I agree, with the caveat that if you've got the later style lines it's probably not necessary. I pulled mine out a few months ago and replaced with stainless, but wish I hadn't. They were in excellent shape and not brittle at all. Removing them also meant that I had to add additional rubber lines that now go from the stainless lines exiting the rear firewall to the stainless lines in the engine bay, where previously the plastic flexible lines carried all the way through into the engine bay.