Question about 1999 Hyundai Sonata

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Fuel line return from injector rail leaking, on drivers side firewall. how do i replace. There is a 3/4" and 9?16" fitting which is difficult to loosen to replace suggestions ?

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You need to buy flare or fuel line wrenches, they wrap around the heads for removing the flared ends-here is a link to sets sold by Sears:

http://www.sears.com/shc/s/search_10153_12605?keyword=fuel%20line%20wrenches&seaxfue=1

Posted on Apr 01, 2011

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Posted on Jan 02, 2017

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03 3.7 have new o rings for bottom of injectors do you put it on the head first or on the injector just put head gaskets on jeep


old post but see it asked many times.
assemble the rail first, its 1 piece so must be ready first.
3.7L Engine (FSM) RTM?
(1) If fuel injectors are to be installed, refer to Fuel
Injector Removal/Installation.
(2) Clean out fuel injector machined bores in
intake manifold.
(3) Apply a small amount of engine oil to each fuel
injector o-ring. This will help in fuel rail installation.
(4) Position fuel rail/fuel injector assembly to
machined injector openings in cylinder head.
(5) Guide each injector into cylinder head. Be careful
not to tear injector o-rings.
(6) Push right side of fuel rail down until fuel
injectors have bottomed on cylinder head shoulder.
Push left fuel rail down until injectors have bottomed
on cylinder head shoulder.
(7) Install 4 fuel rail mounting bolts and tighten.
Refer to torque specifications.
(8) Install 6 ignition coils. Refer to Ignition Coil
Removal/Installation.
(9) Connect electrical connectors to throttle body.
(10) Connect electrical connectors at all fuel injectors.
To install connector, refer to (Fig. 37). Push connector
onto injector (1) and then push and lock red
colored slider (2). Verify connector is locked to injector
by lightly tugging on connector.
(11) Connect necessary vacuum lines to throttle
body.
(12) Connect fuel line latch clip and fuel line to
fuel rail. Refer to Quick-Connect Fittings.
(13) Install air box to throttle body.
(14) Install air duct to air box.
(15) Connect battery cable to battery.
(16) Start engine and check for leaks.

Oct 07, 2014 | Jeep Cars & Trucks

1 Answer

What causes 2005 pontiac vibe to flood gas?


Hi, As your vehicle is a late model (2005) it should have electronic fuel injection aspiration and as such flooding is very unusual, but can occur if an injector is leaking. If fuel is visible on top of the engine DO NOT TRY TO START! but instead determine where the leakage is, from. The most likely places are the flexible fuel lines both the feed and return fuel lines to and from the fuel rail. If the leakage is from around the injectors, inspect the 'o' ring seals fitted to each injector top and bottom (nozzle) side. If they have become hardened, cracked or broken, replace all. Regards John.

Jun 21, 2014 | 2005 Pontiac Vibe

1 Answer

1993 dodge dinesty 3.4 fuel rail leaks how can i repair


If the metal fuel rail itself has a leak, it should be replaced. If it is leaking by an injector, the O-rings on the injectors need to be checked and probably replaced. If a fuel line to the rail is leaking, that will have to be repaired. There will be two fuel lines at the rail, the feed line in from the gas tank, and a return line from the rail back to the tank. If there is a pressure regulator on the fuel rail (it will have a short vacuum line hose to it), the regulator may also have an o-ring to keep from leaking where it mounts.

May 25, 2014 | 1993 Dodge Dynasty

1 Answer

How to remove fuel injector #3 diagram


Hi, the picture shown is the driver's side of the engine. Go to the passenger's side and remove the 2 similar screws holding the fuel rail. Disconnect all of the injector connectors on that side. Raise the rail up carefully until the injectors come free from the manifold. #3 is third back from the front of the engine. Twist and pull it out of the fitting on the rail. Oil the oring on the new injector and twist it in. Oil all of the lower orings and slip the injectors back into the manifold. Replace the 2 fuel rail bolts and reconnect the injectors. Please let me know if you have questions, and thanks for using FixYa.
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Jul 09, 2011 | 1999 Ford Expedition

1 Answer

How do you change fuel injectors


Hello,

For a 2003 it is on the frame rail under the drivers side door. Don't bother taking off the black holster that holds the fuel filter/injector onto the frame rail.
1 )Simply unscrew the nuts on both sides of the fuel filter/injector. It will be under pressure. Wear safety goggles. A couple of cups of fuel will spill.
2) Look at the fuel line on the engine side. Notice the clip holding in the line. Remove the line from the clip.
3) Remove the fuel lines from the filter starting with the side toward the engine. This side has more play/laxity in the line.
4) Slide out the fuel filter/injector from the black holster.
5) Slide in the new fuel filter/injector with the flow directional arrow pointing toward the engine.
6) Attach the fuel line to the filter starting with the tank side first. Don't force it and thread out the fittings.
7) Attach the engine side fuel line. The fitting would come together by hand screwing the male into the female end. I did have to use a wrench to gently start it.

Take care.

Sep 04, 2010 | 2003 Chevrolet Avalanche

1 Answer

Gas Leak under Hood on 2004 Aviator


It can only be a small area. Does it seem to be coming from the fuel rail area, which is usually chrome color. The fuel pressure regulator or fuel line. The fuel line come up the driver side firewall connects to a regulator, and then feeds into the fuel rail. Any of these connections could be the leaking source. Also one of the rubber o rings for the injector could be leaking. Look to see where it mostly looks to be coming from and feel around the pipes for the gas.

May 10, 2010 | 2004 Lincoln Aviator

1 Answer

Replace fuel rail


check fuel inlet and return lines for leaks.also check for leaks at fuel pressure regulator and fuel injectors.

Dec 13, 2009 | 2002 Chevrolet Impala

1 Answer

Gas line leak. looking for a diagram of how gas lines are run


The Lines are simple if it's a 2.4 EFI the lines run on the driver side inner rail from the center top of fuel tank, and up the middle of the firewall to the injector rail or throttle body carburetor there is also one line that runs from the evap canister back to the tank and to the fuel system three lines total one is a return line the large line is the main fuel line and has the fuel filter mounted on it and is under the driver side door inside the frame rail.

Jun 24, 2009 | 1995 Nissan Pickup

1 Answer

Gas smell when starting and small dripage when back up from under engine


It sounds like the return fuel line is leaking. There are two fuel line and one is the high pressure line which goes to the fuel pressure regulator then to the fuel rails. There is then a return line from the fuel rail to the gas tank.
With the amount of fuel leak, it's going to be the return line since it's not that bad compared to the high pressure side. Follow the fuel lines from the drivers side around the steering shaft to the engine. The high side and low side (return) run side by side and you should see it leaking when the engine is running.
Good luck and hope this helps.

May 25, 2009 | 1994 Chevrolet Beretta

1 Answer

Injector fuel line leak


Unscrew it and replace the "O" ring at the fitting. These "O" rings like to get old and crack.

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