Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Nissan Patrol and Ford Maverik
+ Cars of the Nissan Patrol and Ford Maverick series
+ Diagnostics of malfunctions
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
- Systems of decrease in toxicity of the fulfilled gases
   System of ventilation of a case
   System of a retsirkulyatsiya of the fulfilled gases (EGR) - models of 3.0 l
   Control system of quality of a mix during a deseleratsiya
   Control system in temperature of soaked-up air
   System of catching of fuel evaporations (ECS)
+ Systems of electric equipment of the engine
+ Transmission
+ Coupling
+ Brake system
+ Forward and back bridges, running gear and steering
+ Body
+ Onboard electric equipment

System of catching of fuel evaporations (ECS)

Action principle

The ECS system is used for decrease in hit in the atmosphere of hydrocarbonic connections from a fuel tank.

Principle of functioning of system

1 — a fuel tank
2 — the unilateral control fuel valve
3 — to TVV (only 3,0л)
4 — a butterfly valve
5 — the inlet pipeline
6 — a coal adsorber

The number of the main components of system includes a coal adsorber, the valve of management of a purge, tightly executed fuel tank and, on models of 3.0 l, the thermovacuum valve (TVV).

Location of the valve of management of a purge and a coal adsorber on models of 4.2 l

At the idle engine fuel evaporations gradually fill all free from fuel fuel tank space. As the tank is equipped with a tight cover, pressure паров rises and they are forced out in a coal adsorber where collect. The unilateral control valve prevents hit in an adsorber of liquid fuel.

At engine start a small amount of evaporations arrives in the inlet pipeline through a throttle opening of a constant purge and is burned as a part of an air and fuel mix. At increase in turns of the engine the main throttle opening of a purge of an adsorber from which the bigger volume of the evaporations which have accumulated during parking is thus deduced opens.

On models of 3.0 l for a perekryvaniye of the main throttle opening of a purge at low temperature of the engine the special thermovacuum valve (TVV) is used.


Service of system should be made regularly, and it is necessary to give special attention to the moments listed below.


  1. Check passableness and an external condition of all hoses of system.
  1. Check a condition of sealing laying of a cover of a mouth of a fuel tank (see an accompanying illustration). Make sure of serviceability of functioning of a safety valve of dumping of depression.
  1. Check functioning of a coal adsorber and the unilateral control valve.

Check of a coal adsorber


  1. Examine an adsorber on existence of signs of damages and traces of leaks. In case of need make replacement.
  2. Mark and disconnect from an adsorber hoses.
  3. Blow in the union of the top hose of management of a purge. Air should not pass.
  4. Blow in the union of the bottom hose of a purge. Air should pass freely.
  5. Blow in the union of an inlet hose. Air also should be blown.
  6. In case of need replace an adsorber.

Check of the unilateral control valve


  1. Remove the valve from a fuel tank (see an accompanying illustration).
  1. Blow in the union of the valve turned to a fuel tank. Air should not pass.
  2. Blow in the union of the valve located from a coal adsorber. Pass of air should be free.
  3. In case of need replace the valve.