Fuel hose size

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Mar 14, 2016 | 03:43 PM

ktm4012

Thread Starter

Mountain Pass

Joined: Feb 2016

Posts: 205

Likes: 13

From: Southington CT

Fuel hose size

Can someone tell me the fuel hose size that's along the frame on my 79 F 250? I bought 3/8 hose but when attaching it to the steel tubing along the frame it's way too small. I'm sure 1/2 hose would be too big. Is there anything in between? Thanks

Mar 14, 2016 | 04:34 PM

kadrocker

Senior User

Joined: Mar 2009

Posts: 460

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From: New Oxford, PA

Last week I replaced the rubber fuel lines on my truck, they were 3/8 of an inch. Fit perfectly on to the steel tubing

I have a 76 F150

Mar 14, 2016 | 05:27 PM

84espy

Fleet Mechanic

Joined: Nov 2009

Posts: 1,398

Likes: 6

My 75 F250 w/460 uses 3/8 hose. It may be that the hose needs to be warmed to install easier. Try dipping into cup of hot water.

Mar 14, 2016 | 06:25 PM

mikeo0o0o0

Hotshot

Joined: Apr 2009

Posts: 14,333

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From: Stanley, VA

+3. The fuel line from the tank to the pump is 3/8".

Mar 14, 2016 | 06:40 PM

ktm4012

Thread Starter

Mountain Pass

Joined: Feb 2016

Posts: 205

Likes: 13

From: Southington CT

I just read fuel injection hose is a tighter fit. Didn't know that.

Mar 14, 2016 | 08:35 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

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From: NorCal

Quote:

Originally Posted by ktm4012

I just read fuel injection hose is a tighter fit. Didn't know that.

Yeah... cuz its burst pressure is like 300 PSI or more... whereas a carb's rubber hose only has to anticipate less than 10 PSI under typical applications.