The Fuel Filler Hose Replacement Guide

A fuel filler hose connects the fuel fill cap inlet to the gas tank, This Fuel filler hose is usually secured with hose clamps. There are several types of fuel filler hose to consider when replacing your cracked or worn out hose. 

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When its time to replace your fuel filler hose there are several different things you need to know.

First; Is the fuel filler hose straight or curved? In order to find out you will most likely need to crawl under the vehicle and see for yourself. Once you get an idea of what it is your looking for then your ready to make a decision on what will work best for you.

Straight fuel fill hoses.

There are two different categories of straight fuel filler hose. These are "Hardwall and Softwall" gas fill hose.

Here are the characteristics of each.

Soft wall Fuel Filler Hose: Link Here

This Fuel Filler Hose has nylon cord reinforcement and will expand and contract as to fit over barbed or flared ends of the filler neck and fuel tank connections. However This hose can be pinched or collapse under a hard curve such as a short 90 or 45 degree.

The rule of thumb with softwall fuel filler hose is that; "The smaller the inner diameter; the more it will bend without collapsing". In other words; 1" inner diameter fuel filler hose will do a 90 degree bend much easier and in a shorter distance than 2" for example. 

Hard Wall Fuel Filler Hose: (Also Known as Type A2 Marine) link here

This fuel filler hose has a steel wire reinforcement within its wall. This causes the hose to be extremely rigid and will not expand and contract when fitting over barbed or flared beads on the filler neck or tank. This also makes it harder to clamp down on the neck and tank hookups. You may want to use 2 clamps on each end to make sure that it is secured. 

However this hose will not pinch off when bent to extremes. 

Ultra Flex Sections

Our Exclusive Flexible Fuel Filler Neck Hose Sections Are designed to Give You The Best Of Both Worlds. Extreme Flexibility In Tight Spaces, With Soft Wall End Connections. This Allows For Easy Attachment To Beaded and Flared Connection Points. These Can Be Connected End To End; Or Placed At The End Of Metal Tubing To Go Longer Distances. These Are VERY Well Made For Long Lasting Strength and Durability. It Doesn't Get Much Better Than This. To See Click here

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Angled Fuel Fill Hoses: Click here

If Your fuel filler hose has a curve try do determine if it is close to a 45 degree or a 90. 

In this case you will want to use a angled fuel filler hose elbow. Because they are rubber; there is some flex in the elbow to give you more leeway ether way. Note: If you have more than one bend; Use a Joiner and clamps to mate the elbows together, all you have to do is cut each elbow down to proper length and splice together.

The 90 degree elbow can be opened past 90 degrees in order to make about a 55-90 degree angle. 

The 45 degree fuel fill elbows can be opened up to make about a 25-45 degree angle. 

Hoses with different Inner Size Diameter at each end:

Are the ends of the fuel filler neck hose the same size? many manufacturers have different sizes from one end to the other, Why they do this is know-ones guess but it is a miserable fact of reality. 

However their are some very easy ways to get around this. You will need to use Inner Diameter or I.D. Reducers.  Link

These are a handy plug that can be inserted in the end of the hose to make the inner diameter smaller without having to worry about gaps and issues tightening down you fuel filler hose. Currently they come in Quarter Inch Increments.

For More Information Visit www.fillernecksupply.com

Marine fuel systems are a hot topic. Continued pressure from the federal government to increase the amount of alcohol in fuels has brought serious concerns and changes to the marine industry and the way fuel systems are manufactured, rigged, and maintained. E10 fuel (gas blended with 10-percent ethanol) has been difficult to adapt to, but the marine industry has made the necessary changes to parts such as gaskets, carburetor repair kits, fuel lines, pumps, filters, and injectors to combat the ravaging effects of alcohol in the fuel. Here's how to maintain your fuel system to ward off unwanted effects of alcohol-laced fuels.

Fuel Lines

The engine can't run if it can't get fuel. The innards of older fuel hoses are highly susceptible to alcohol deterioration, and if left unchecked can disintegrate and cause clogging, poor running, and even engine failure. The problem is even more insidious because the effects can be highly inconsistent. I replaced the fuel lines in two very similar outboard boats in 2008 using the same fuel line from the same roll. The two boats also used the same fuel. Three years later, I checked the fuel by disconnecting the line and pumping some gas into a clear glass jar using the primer bulb. One boat was fine; the other showed globs of soft rubber from the inner wall of the fuel hose floating in the fuel. Manufacturers generally use 10 years as the lifespan for gasoline hoses, but it's important to inspect the fuel lines every year, and if there's any doubt, replace them with new EPA-compliant hose and new clamps.

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