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Replacing fuel lines

Posted: Wed Sep 11, 2019 9:52 am
by Huffduf41
Hey guys I have some old nasty fuel lines that I'm going to replace before they burn me. I have rubber lines held to barbs w/ hose clamps right now and I'm good with that setup. What material (and who sells it) should I buy?

Thanks

Re: Replacing fuel lines

Posted: Wed Sep 11, 2019 8:46 pm
by SWAMPHUNTER45
I run standard automotive rubber fuel line that I purchase from NAPA

Re: Replacing fuel lines

Posted: Thu Sep 12, 2019 7:13 am
by Slidin Gator
USCG type A1. It is fire resistant and ethanol rated. If run in enclosed spaces it is supposed to be A1-15 which adds low permeability. Any marine store will carry it and unless it’s old stock it will be -15.

Here is some good info:
https://www.jamestowndistributors.com/u ... docId=1133

Re: Replacing fuel lines

Posted: Thu Sep 12, 2019 11:05 am
by Huffduf41
Slidin Gator wrote:USCG type A1. It is fire resistant and ethanol rated. If run in enclosed spaces it is supposed to be A1-15 which adds low permeability. Any marine store will carry it and unless it’s old stock it will be -15.

Here is some good info:
https://www.jamestowndistributors.com/u ... docId=1133

Thank you, exactly what I was looking for.

Re: Replacing fuel lines

Posted: Thu Sep 12, 2019 12:47 pm
by terrible ted
What fuel do you run? Avgas eat ethanol fuel lines up. Now I don't run ethanol in my boats at all so auto store fuel line is the best.

Re: Replacing fuel lines

Posted: Thu Sep 12, 2019 6:09 pm
by Slidin Gator
terrible ted wrote:What fuel do you run? Avgas eat ethanol fuel lines up. Now I don't run ethanol in my boats at all so auto store fuel line is the best.
Ted,
I'm interested to know if you have details on the fuel line you had an issue with? I run 100LL with Type A1 fuel hose with no issues. As far as I know all the stuff the auto parts stores sell these days is ethanol compatible as standard since that's the fuel used in autos. Type A1 is made of NBR / Buna-N which is a synthetic rubber used for all types of fuels, same as the auto parts hoses. Just checked Aircraft Spruce and the stuff they sell is NBR too. A1 just has a heavier jacket, larger OD that I find it more durable. It's more costly, but an airboat is still a boat, subject to USGC regs, for what it's worth.

Re: Replacing fuel lines

Posted: Sat Sep 14, 2019 8:15 am
by John Fenner
Aeroquip push loc gets my vote on oil and fuel line plumbing.

Re: Replacing fuel lines

Posted: Sun Sep 15, 2019 8:41 am
by terrible ted
The fuel line was blue specificly made for ethanole I bought it from a Marine store.

Re: Replacing fuel lines

Posted: Sun Sep 15, 2019 9:16 am
by SWAMPHUNTER45
There is s saying in my world "everything for a purpose!"

Reason I don't run that hose is in the past I have seen the inner liner separate from the hose and collapse. Hose looks good but the inner will be unable to pass fuel.

Just my reasons as to selection

Maybe they got better with it but the grey hose was the worst.

Re: Replacing fuel lines

Posted: Sun Sep 15, 2019 11:30 am
by Gladesman06
X2 with John. Aeroquip is the only hose I will use.

Re: Replacing fuel lines

Posted: Thu Sep 19, 2019 9:33 pm
by terrible ted
SWAMPHUNTER45 wrote:There is s saying in my world "everything for a purpose!"

Reason I don't run that hose is in the past I have seen the inner liner separate from the hose and collapse. Hose looks good but the inner will be unable to pass fuel.

Just my reasons as to selection

Maybe they got better with it but the grey hose was the worst.

That's what happened.

Re: Replacing fuel lines

Posted: Fri Sep 20, 2019 5:34 am
by L.H.Cracker
SWAMPHUNTER45 wrote:There is s saying in my world "everything for a purpose!"

Reason I don't run that hose is in the past I have seen the inner liner separate from the hose and collapse. Hose looks good but the inner will be unable to pass fuel.

Just my reasons as to selection

Maybe they got better with it but the grey hose was the worst.
This same exact thing has happened to me with both the blue and grey marine hoses.

Re: Replacing fuel lines

Posted: Fri Sep 20, 2019 7:59 pm
by Slidin Gator
L.H.Cracker wrote:
SWAMPHUNTER45 wrote:There is s saying in my world "everything for a purpose!"

Reason I don't run that hose is in the past I have seen the inner liner separate from the hose and collapse. Hose looks good but the inner will be unable to pass fuel.

Just my reasons as to selection

Maybe they got better with it but the grey hose was the worst.
This same exact thing has happened to me with both the blue and grey marine hoses.
X3 on the gray that comes with the primer bulbs kits for me too. I am not sure what that cheap gray fuel hose is rated for since it does not handle any type of fuel well, so I am not sure what it's purpose is :scratch:

On my kicker boats I cut it off the bulb kits and replace with good hose. I'm not sure why the Coast Guard even let's them sell that stuff except they don't really regulate temporary deck tank fuel systems.

I 100% agree with John on the Push Loc hose for hot, high pressure oil lines, including my Auto transmission circuit on the buggy. The only issue with it is you will never get the hose back off the Push Loc fitting without a razor knife, so it is always good to plumb in extra length for the future.

Re: Replacing fuel lines

Posted: Sun Sep 22, 2019 3:40 pm
by Billykid
AN lines are the only way to go, little more cost , but well worth it in the long run!!! :roll: