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Repair Automotive Fuel Hoses with BrakeQuip

hose school | Posted: 7/21/2021

We all know that fuel is what keeps us going on the road, but what happens when your lines just aren’t holding up? Let’s take a look at fuel lines, and how to tell when it’s time to replace them.

How to Tell if a Fuel Line is Failing?

Fuel hoses, commonly referred to as fuel lines, are the hoses or tubing in a vehicle’s system that deliver gas from the tank to the engine. While they’re built to last, they can dry out or crack and begin to leak over time. But, there are a few symptoms that you can look out for:

  1. Cracks: these are caused overtime when the tubing becomes dried out and begins to fracture. A cracked tube will not be able to hold up to quick pressure changes, and they will be more susceptible to leaks.
  2. Odor: Small leaks in the fuel tubing cause the vehicle to emit fuel vapors, which may cause a noticeable odor. Small leaks will eventually grow into larger leaks, creating a serious issue.
  3. Dripping: A leaky fuel line can also produce drips or in more serious cases, puddles of fuel underneath the vehicle. This will also cause a drop in fuel pressure.

If there’s an issue with any part of your line, the best course of action is to replace the whole thing, not just the damaged sections.

About Our BrakeQuip Offering

BrakeQuip FuelFlex tubing, fittings, and accessories will help you get back up and running in no time. This easy to assemble system is compatible with carbureted and fuel-injected systems.

The FuelFlex tubing allows you to build a new fuel line from scratch, or connect to previously installed fuel lines in your vehicle. The FuelFlex fittings are available in threaded end fittings, as well as a number of connectors and adapters. These fittings will allow you to:

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The FuelFlex tubing can be attached to all of these fittings using BrakeQuip’s 360-degree tube clamps. You can do this by lining up the fitting barb end to the end of the tubing you are using, marking the area where the clamp will be connected, sliding the clamp onto the tubing, installing the fitting you intend to connect to, and giving the whole thing a simple pinch with the professional hose crimp pliers. Now you’re connected with a positive seal!

Most modern vehicles have quick-connect fittings, but they’re not all that “quick.” After all, you still need a specialized tool to disconnect them! However, the BrakeQuip quick-connect fittings are unique because they truly are quick, regardless if you’re connecting or disconnecting a fuel line, no tool is required. That’s because the retainer, the plastic bit that holds the tubing in place, is built into the connector. This means that all you need to do to disconnect it is push in the tab and pull to release. Just make sure that all the pressure has been relieved before loosening or removing any components of your line.

Joining/Splicing Fuel Lines:

Now, if you’re splicing or adapting old metal fuel lines, you’ll need a way to join them together. Compression fittings are designed precisely for this. They are made up of three components: the compression nuts, the compression sleeves, and the union itself. To join the lines together just follow these simple steps:

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  1. Start by sliding the nut onto the tube or pipe and then sliding the sleeve on behind it.
  2. Push the union as far as it will go onto the brake line and bring the nut and sleeve to the union, threading the nut onto the union and tightening them together.
  3. Tighten the nuts on both sides of the union to compress the sleeves and create a seal.

All fuel lines which are fastened to the body, frame, or engine are of steel tubing. If you’re working with a steel line, you’ll need to bend it, and this lightweight, yet strong, brake tube pliers are just the tool for the job.

Another common problem encountered in older vehicles is hard starting, which is often caused by the failure of a fuel pump’s internal check valve. So that’s why this fuel pressure repair kit can be a real lifesaver. This kit includes a check valve with installation fittings for steel, nylon, and rubber fuel lines. Best of all, it can repair a system in fifteen minutes or less, with no need to drop the fuel tank!  

Here at, we’ve got all the tools, parts, and knowledge for the job. We even have kits to help you complete the process, from the first step to the last. But if you have any questions feel free to contact us here, and make sure to subscribe to our email list so you can keep up to date with the latest offers, flyers, new products, and giveaways here at

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