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Tech 101: Fuel-Line Hose--What You Should and Should Not Use

Posted December 09, 2014 8:30 AM by dstrohl
Pathfinder Tags: fuel fuel line materials Tech 101

Most vehicle repair shops are encountering a lot of fuel-line-related issues since the introduction of ethanol into America's pump gas. Because of ethanol's effects on rubber, plastic and metals, they are finding themselves spending a lot more time fixing fuel delivery systems than they did in the days of leaded gas and carburetors.

Shops that perform these fuel system repairs are faced with the fact that there are now many possible types of fuel line that are necessary to make a proper, safe and durable repair. The few rolls of neoprene fuel line or steel tubing that used to hang on the wall are now only part of the varied products needed to perform these repairs. New sizes, new materials, new attachment fittings and new manufacturer's O.E. recommendations have caused many shops to expand their inventories of fuel line products to meet market demands.

A quick review of material specifications on Hemmings Daily.

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Re: Tech 101: Fuel-Line Hose--What You Should and Should Not Use

12/10/2014 12:05 PM

A bit sparse on specifications. In fact, this piece is almost useless. Sorry, I just did not find this piece very well written or organized. I was hoping for a table of specifications that would make a useful reference. Useful specifications might have included pressure range, temperature range, chemical compatibility, discussion about which fuel lines to use for low pressure applications and high pressure fuel injection. How much ethanol will the fuel line tolerate. Be careful with Tygon for gasoline based fuels and make sure it is suitable for gasoline/ethanol mixtures. There are many different types of Tygon. We use it and similar types of clear tubing like Superthane for underwater cables of the pressure-balanced oil-filled types.

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