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77 f100 custom - identify these hoses please.

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Old May 8, 2016 | 04:32 PM
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77 f100 custom - identify these hoses please.

i have a 1977 f100 custom, inline 6 with the gas tank behind the rear axle.

these two hoses are right where the gas nozzle inserts to fill up the tank. the larger hose is i preume called the fuel filler hose but i do not know what the smaller hose is called. i have two manuals and neither one of the manuals identify these hoses.

the picture with the hoses wet is from a short drive to the grocery store and back, about 3 miles round trip.



 
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Old May 8, 2016 | 04:34 PM
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The smaller hose is a vent line for the tank.
It's main function is to allow the air in the tank to escape while your putting fuel in it.
 
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Old May 8, 2016 | 08:36 PM
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The vent hose is a standard size and can be bought in bulk. Just be sure the hose you get is rated for oil/gasoline.
 
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Old May 8, 2016 | 08:58 PM
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Someone who doesn't know better will sell you heater hose for less, but it won't last very long before the gas makes it look like the one you have. Trust me. Experience. Lol. My Napa has better fuel rated hoses than the other parts stores around me.
 
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Old May 8, 2016 | 09:12 PM
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EFI rated hose is said to hold up better to ethanol laced gasoline and modern fuels.
 
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Old May 8, 2016 | 10:17 PM
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I've had fine luck with the carb gas hose, they have changed in the past decade since ethanol gas became standard. The efi hose is like three times the cost, and probably unavailable in that diameter anyway? The bigger diameter stuff is expensive anyway.
 
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Old May 8, 2016 | 11:02 PM
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Well it's your truck I guess, use whatever you want.
 
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Old May 9, 2016 | 07:36 AM
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Just replaced on my 79 F150. Yes, very special hose. Sold by the inch. Just search "Filler Neck Supply" Both were only about $20 with shipping.
 
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Old May 9, 2016 | 08:43 AM
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Take a look at Transfer flow... I have dealt with them for years.


https://www.transferflow.com/Content...eckCatalog.pdf
 
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Old May 10, 2016 | 12:23 PM
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Originally Posted by STRONGLAND
Just replaced on my 79 F150. Yes, very special hose. Sold by the inch. Just search "Filler Neck Supply" Both were only about $20 with shipping.
very special indeed apparently. no local auto part store (advanced, carquest, pep boys) carries them.

i found the filler neck supply site and got 'em.

thanks dude!!
 
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