I need to replace the return fuel line and can not find any specs for it. The main fuel line is 3/8 inch. As far as I know the return line is also 3/8 inch. I need to know the length of the return fuel line and what is needed to replace it.
An expert who has achieved level 3 by getting 1000 points
An expert that got 20 achievements.
An expert that got 10 achievements.
An expert that got 5 achievements.
Re: return fuel line specifications
What is needed is a lot of time and just a few wrenches. Often the return line is slightly smaller than the main line, but you can determine that when you look at it. But why do you need to replace the whole line? It should be a steel line for the most part, so if it is kinked or broken, just cut out the bad part and splice in a new piece. If it is clogged, try taking apart at the ends and use compressed air to blow the line clean-blow from the front towards the back. If the line has to be replaced, I would just buy one from a salvage yard and make sure it is free of restrictions or blockages before installing.
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
There is a pressure regulator on the return line. If the fuel pressure isn't to specification, then either the fuel pressure regulator is bad or the fuel pump isn't putting enough out, or there is a blockage in the supply line. Maybe fuel filter.
There should be only 2 fuel lines and a vent line coming out of the tank. The vent line is for fumes that are routed to the charcoal canister-part of the evaporative emissions system, and the two fuel lines are the main feed line to the filter and then on to the engine, and the other gas line is the return line from the engine back to the gas tank. All fuel injected systems have a feed line and a return line. The return line is for fuel not used but sent back to the tank by the fuel pressure regulator.
Nowadays, rather than replace metal lines, shops can use the plastic fuel lines (they don't rot!) and special connectors to fit new fuel lines. YouTube has lots of videos on replacing fuel lines.
Its kind of a crime that these companys can get away with not making all fuel lines out of stanless steal but they do .So they rust out from the road salt. You don't say what you have but it sounds like an in tank pump. I find the easest way is to replace the metal lines with rubber lines . The pump it self should 3 lines comeing off it. The biggest is 3/8s and thats the main supply then a 5/16 as the fuel return line . It needs this because all of the fuel that is pumped to the injectors is not burned so it returns to the tank. The third line 1/4 or 5/16 is for the EVAP and any kind of rollover shut off system. Your best bet is go to napa tell them your problem and they will have if not everything most of what you need to switch to flexable line that will never rust again and lots of speical fittings and connecters. You can fix it for about 100 dollars in parts but you have to figure out exactly what you will need but if you go to a dealer it would be 2 to 4 thousand on most vehicles .These things are easy to get at GOOD LUCK WITH IT
usually caused by busted diaphram in fuel pressure regulator allowing fuel to be drawn thru regulator directly to intake manifold. Pull vacuum line off regulator, plug line with golf tee, start car and watch to see if gas comes out of regulator. If yes, turn off car, replace regulator. The regulator sits near the fuel rail on the top of the engine as shown below. I will paste replacement instructions below from autozone.com in case you need to replace the regulator. Please let me know if you have any questions.
Removal & Installation
Relieve the fuel system pressure.
Remove the air cleaner outlet resonator.
Disconnect the engine wiring harness from the retaining clips at the front of the engine.
Disconnect the fuel pressure regulator vacuum line.
Clean any dirt from the fuel pressure regulator and the surrounding area.
Disconnect the fuel return pipe.
Remove the fuel return pipe retainer.
Remove the fuel pressure regulator retainer.
Remove the fuel pressure regulator.
Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.
Install the regulator filter.
Install the new O-ring on the fuel pressure regulator.
Lubricate the fuel pressure regulator O-ring with clean engine oil.
Push the fuel pressure regulator into the regulator housing on the fuel rail.
Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
Connect the fuel return pipe.
Connect the fuel pressure regulator vacuum line.
Connect the negative battery cable.
Inspect for leaks:
Turn ON the ignition for 2 seconds.
Turn OFF the ignition for 10 seconds.
Turn ON the ignition.
Inspect for fuel leaks.
Install the engine wiring harness into the retaining clips at the front of the engine.
There are 3 types of lines that go to the rear of a car. If you have a van with rear heater, they could be coolant lines for the heater. These would be about 1.25 inch in diameter.
There are 2-3 lines from the fuel tank to the engine compartment. One is the fuel line, one is the evaporation control line. If a third, it might be a return line for overpressure. These lines are about 0.5 inches in diameter.
The brake lines for the back wheels will go from the brake system master cylinder to the wheels. These lines are about 0.25 inch in diameter.
If any of these is leaking, it will have to be repaired. Please let us know if you have questions.
Yes it should, but if your only looking to replace a small leak along the return line. Just keep it simple and section the damaged area with a rubber fuel hose. Just make sure it's a fuel injected rubber hose and no longer then 3 inched and double clamp with compression clamps. Common place to find the leak is where the fuel line is secured on the frame by the plastic clips. Good luck and keep me posted.
you should have two metal bands/strapes hold the tank in place, a bolt on each end of the strapes. disconnect the fill neck, supply and return lines, the wires for the pump and sending unit. if possible get the fuel level as low as you can. gas is heavy. lift the car up as far as you can, i say 2 and a half to 3 feet off the ground. a car lift is even better. the fuel pump will be held in place with a ring, use a hammer and punch to drive the ring counterclockwise to remove. don't let any dirt go into the tank.