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Fuel Injector Line

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Fuel Injector Line Products

The fuel injector line is a common source of leak in the fuel assembly. This line is not a lifetime component, and it needs periodic replacement to avoid incidents of leaks. No matter how small a fuel leak, it still poses great danger because of the possible onset of fire. Plus, a leak can also cause damage to other components such as radiator hoses. Some types of fuel pose damage to these hoses, so you'd have to deal with more expenses on replacement parts. And of course, a driving problem is unavoidable due to the insufficiency in the amount of fuel reaching the engine, caused by the leaking fuel injector line. Fortunately, replacing a leaking injector line is an easy task. All you need is the replacement line and a little amount of your time. Most often, you just have to pull off the damaged line and push on the new one. It's a good practice, though, to replace all the fuel injector lines when one of them starts to leak. Why? Because this is an indication that the other lines are not far from leaking, too. Don't worry-we have your needed replacement fuel injector line here at Auto Parts Warehouse. Check our catalog now and find what you need.

Buying Guides

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Dos and Don'ts: Choosing the Best Fuel Injector Line for Your Car

Is your car still having emission and performance problems even after you replaced most of its damaged parts? If your answer is yes, then you should check the fuel injector line for leaks. Found in the fuel assembly, this line allows fuel to reach the vehicle's intake system. Once this line gets damaged, fuel will leak inside the engine therefore making your car a fire hazard. So you won't worry about your car and your life, you need to purchase a high-quality fuel line replacement. Listed below are some of the dos and don'ts when choosing the best fuel injector line for your car.


  • Check if the fuel injector line you're going to buy is brand new or remanufactured. Some manufacturers remanufacture car parts to cut production cost and recycle hundreds of end-of-life (ELV) parts that are dumped in landfills. Brand new and remanufactured fuel injector lines are almost the same when it comes to price and quality. However, if you don't want to take a risk, then you should go for a brand new one.
  • Make sure that the replacement line is appropriate for your vehicle. Nowadays, fuel injector lines are sold as rubber gasoline and diesel lines. Rubber gasoline lines are flexible and can block static electricity. On the other hand, diesel hoses are tougher and can withstand the extreme temperatures produced by diesel engines. If your car runs on gasoline, then you need a rubber gasoline hose. If it runs on diesel, then you should get the diesel one. Take note that if you get the wrong type, your car will not run or worse-suffer long term engine problems.


  • Don't go for a fuel injector line that doesn't come with a warranty. Though oftentimes overlooked, warranty is an important factor because it guarantees you of a workmanship- and material-free product. Moreover, opting for a warranty-covered product will let you save a lot of money in the long run because you'll be spared from premature repairs and frequent replacements.
  • Don't buy a new fuel line that's too thin or thick for your vehicle's fuel injector system. Usually, lines for gasoline-powered vehicles range from 3/8 inch to 1/2 inch in diameter while diesel lines are approximately 1/4 inch up to 4 inches thick. Buying a mismatched fuel hose will only damage your vehicle, so you'll end up spending a lot of money and time for repairs and replacements.

Repair Guides

Date Published :

Replacing the Fuel Injector Line in the Engine Compartment

Fuel injector lines transport fuel all the way from the fuel pump to the fuel injectors. After about every 2 years or 20,000 miles, the fuel lines need to be checked for any wear or damage. Any amount of damage seen in the fuel lines means that they have to be replaced. The whole process is time consuming but is necessary to prevent incidents like car stalling and fires.

Difficulty level: Moderate

Tools that you'll need:

  • Wrenches
  • Screwdrivers
  • O-rings
  • New fuel injector line
  • Seals

Relieving fuel line pressure

Step 1: Park the vehicles in a safe, level area. Make sure the engine is still running.

Step 2: Open the hood of the car to access the engine compartment.

Step 3: Look for the fuse box containing the fuel pump relay.

Step 4: Detach the fuel relay from the fuse box. This will stop the engine.

Step 5: Turn off the car ignition before reattaching the fuel pump relay.

Step 6: Disconnect the battery by removing the battery cable from the negative cable. This will prevent fires from starting by accident.

Removing the fuel injector line in the engine compartment

Step 1: Locate the fuel injector lines.

Step 2: Remove the bolts securing the fuel line.

Step 3: Disconnect the fuel line attached to the fuel rail and the fuel filter.

Attaching new fuel injector lines

Step 1: Attach the fuel injector line to the fuel filter and to the fuel rail, make sure that the necessary seals are in place to prevent leakage.

Step 2: Secure the fuel lines to the engine compartment by screwing in the bolts.

Step 3: Clean off any fuel that might have spilled onto the engine compartment.

Step 4: Reattach the battery cable to the negative terminal of the battery.

Step 5:Start the car to test for any leakage.


It is advised that you disconnect that battery as instructed in the previous steps to prevent fire. Clean up any spilled fuel with a rag.

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