Nissan Maxima QX

since 1993 release

Repair and operation of the car



Nissan Maxima QX
+ Cars of the Nissan Maxima brand
+ Maintenance instruction
+ Settings and routine maintenance
+ Engine
+ Cooling systems, heating
- Power supply system and release
   General information
   Dropping pressure in a power supply system
   Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel
   Check of a state and replacement of fuel lines and their nipple connections
   Removal and installation of the fuel pump
   Check of a state and replacement of the sensor of fuel consumption
   Removal and installation of the fuel tank
   Cleaning and repair of the fuel tank - general information
   Removal and installation of assembly of the air cleaner
   Removal, installation and adjustment of a cable of an accelerator
   System of electronic injection of fuel (EFI) - the general information
   Check of serviceability of functioning of system of injection
   Check of a state and replacement of the case of a throttle
   Removal and installation of the regulator of pressure of fuel
   Removal and installation of the fuel highway and injectors of injection
   Check and adjustment of turns of idling
   System of release - the general information
+ Engine electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



Check of a state and replacement of fuel lines and their nipple connections

See preventions at the beginning of the Section Dropping Pressure in a power supply system.


 PERFORMANCE ORDER

1. Before starting service of fuel lines or their nipple connections it is necessary to dump pressure in a power supply system (see the Section Dropping Pressure in a power supply system).
2. Lines of a fuel path of a power supply system are laid between a gasoline tank and a motive compartment. Steel tubes and flexible fuel hoses fasten to the car bottom by means of clips and screw fixture. Every time when the car rises above the ground with any purpose (for example, for survey or replacement of components of system of production of the fulfilled gases), try to take an opportunity and to check a condition of fuel lines and their nipple connections. Attentively examine all hoses and tubes of a fuel path on existence of cracks, twisting, deformations and other mechanical damages.
3. At identification of signs of internal pollution or violation of passability the corresponding section of a fuel path needs to be removed and blown compressed air. Without fail check also a condition of the mesh filter of a toplivozabornik of the pump (see the Section Check of a State and Replacement of the Sensor of Fuel Consumption).

Steel tubes

Use only high-strength steel tubes of production of the proved manufacturers as replaceable sections.

Remember that copper and aluminum tubes are not capable to sustain the vibration loadings arising in use the car.

Do not forget that fuel lines on the models equipped with system of injection have to maintain high internal pressure.

Often in company shops of automobile accessories it is possible to get the sections of metal tubes equipped with carving nipple nozzles. During the easing and delay in nipple connections use two wrenches to avoid a provorachivaniye of a reciprocal part of the socket. Without fail check a condition of the nipple connections of sealing rings used for sealing. At once replace the worn-out or mechanically damaged rings. Try to use only company details as replaceable components.

Flexible hoses

When replacing fuel hoses use only company components calculated on high internal pressure.


Flexible fuel hoses have to be laid not closer than in 10 cm from components of system of production of the fulfilled gases and are not closer than in 25 cm from the catalytic converter. You watch that fuel lines did not adjoin to body elements and components of a suspension bracket. The minimum admissible size of a gap makes 6.3 mm.

REPLACEMENT

 PERFORMANCE ORDER

1. The damaged sections of fuel lines (tubes or hoses) have to be removed and replaced new, company production.
2. Dump pressure in a power supply system (see the Section Dropping Pressure in a power supply system).
3. Release the section of a fuel path which is subject to dismantle from intermediate clamps of fastening it to the car bottom.
4. At the corresponding complete set release a collar(s) and disconnect a hose(s) from the metal line(s). In case of need for release rotate a hose on the union for simplification of its detachment.
5. Installation is made upside-down.