Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
4. The engine
5. Cooling and heating systems
6. Power supply systems and managements
6.1. Specifications
6.2. System of the consecutive distributed injection (SFI)
6.3. Sbrasyvanie pressure in the power supply system of petrol engines
6.4. Check of a condition and replacement of fuel lines and them choke connections
6.5. Electronic control systems - the general information
6.6. A control system of engine VG33E. Diagnostics procedures
7. Start and charge systems
8. A transmissionnaja line
9. Brake system
10. A suspension bracket and a steering
11. A body
12. An electric equipment
 












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6.3. Sbrasyvanie pressure in the power supply system of petrol engines

Remember that gasoline is extremely an inflammable liquid! At work with power supply system components observe all taken measures of fire safety. Do not smoke! Do not come nearer to a place of work with open fire or the redurable not protected by a lamp shade! Do not make system service in the premises equipped working on natural gas and heating devices equipped with a control torch (such as водогреи and dryers for clothes).


Do not forget that gasoline is among cancerogenic substances — i.e., the substances promoting development of a cancer! Try not to suppose fuel hit on open sites of a body, — use rubber protective gloves, at casual unforeseen contact to fuel carefully wash hands warm water with soap. Immediately collect the spilt fuel and do not put the rags impregnated with PETROLEUM PRODUCTS near to sources of open fire.


Remember that the power supply system equipped with injection of fuel of models constantly is under pressure. Before to start a detachment of fuel lines, dump residual pressure in system. At service of components of the power supply system put on goggles. Constantly hold near at hand the class fire extinguisher In!

As already it was mentioned above (Power supply systems see and managements), the power supply system structure includes the electric fuel pump placed in a tank погружного, the fuel filter, injection injectors, a regulator of pressure and the connecting listed components fuel lines. Fuel in a power supply system path at the working engine and the included ignition is under pressure. Residual superfluous pressure continues to be kept in system during even some time after deenergizing of ignition and before a detachment of components / undocking choke sockets should be dumped.

Pressure dump in the power supply system should be carried out before service of any of its components for the purpose of minimisation of risk of ignition of fuel and reception by the executor of traumas.

For pressure dump in the power supply system switch off ignition and take from the landing nest in салонном the assembly block a safety lock of the fuel pump, then start the engine and wait its spontaneous останова, — for dump of residual pressure turn the engine of 2-3 more times a starter, then switch off ignition and establish into place a safety lock.



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6.2. System of the consecutive distributed injection (SFI)
On the following page
6.4. Check of a condition and replacement of fuel lines and them choke connections