Checking the condition and replacing fuel lines and their fittings (Honda Civic 6)

Warning! See warnings at the beginning Relieving pressure in the fuel system.

1. Before servicing the fuel lines or their fittings, it is necessary to relieve the pressure in the fuel system (see Relieving pressure in the fuel system).

2. The fuel lines of the fuel system are laid between the gas tank and the engine compartment. Steel tubes and flexible fuel hoses are attached to the bottom of the car with clamps and screw fasteners. Every time the car is raised above the ground for any purpose (for example, to inspect or replace components of the exhaust system), try to take advantage of the opportunity and check the condition of the fuel lines and their fittings. Carefully inspect all hoses and tubes of the fuel system for cracks, twists, deformations and other damage.

3. If signs of internal contamination or obstruction are detected, the corresponding section of the fuel line must be removed and blown out with compressed air. It is also necessary to check the condition of the mesh filter of the fuel flow sensor (see Removal and installation the fuel pump).

Steel tubes

1. Use only high-strength steel tubes from well-known manufacturers as replacement sections.

2. Remember that copper and aluminum tubes are not able to withstand vibration loads that occur during vehicle operation.

3. Remember that fuel lines on models equipped with injection systems must withstand high internal pressure.

4. Often, sections of metal tubes equipped with threaded nipples can be purchased in branded car accessory stores. When loosening and tightening nipple connections, use two wrenches to avoid turning the mating part of the connector. Be sure to check the condition of the sealing rings used to seal the nipple connections. Replace worn or mechanically damaged rings immediately. Try to use only branded parts as replacement components.

Flexible hoses

Caution: When replacing fuel hoses, use only original components designed for high internal pressure.

1. Flexible fuel hoses must be installed no closer than 10 cm from the exhaust system components and no closer than 25 cm from the catalytic converter. Make sure that the fuel lines do not come into contact with the bodywork and suspension components (see accompanying illustration). The minimum allowable gap is 6.3 mm.

Removal and installation

1. Relieve the pressure in the fuel system (see Relieving pressure in the fuel system).

2. Release the section of the fuel line to be removed from the intermediate fasteners securing it to the bottom of the vehicle.

3. Loosen the clamps securing the rubber hoses to the steel pipes of the fuel system. To disconnect the hose, rotate it on the pipe.



4a. Installation is carried out in the reverse order. Do not forget to replace the sealing rings of the threaded nipple connections.





4b. The sealing washers of the hollow bolt of the union nut on the fuel filter must also be replaced without fail (see accompanying illustrations).

Repair

Damaged sections of fuel lines (tubes or hoses) must be removed and replaced with new ones, of brand production.

[Material obtained from the website «HONDABOOK.ru»]