Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Power supply system and production of the fulfilled gases

Power supply system of carburetor engines (3.0 l and early 4.2 l)

General information

Power supply system of cars of the Maverick and Patrol series (models of 3.0 l and 4.2 l till 1992 вып.) consists of the carburetor, the fuel pump, an air purifier, the fuel filter and a fuel tank.

On all models the carburetor of one type with insignificant distinctions for models of 3.0 l with AT and RKPP is established. All differences as performance of procedures of service of these carburetors are listed in the text of Head.
The carburetor is the two-chamber unit with the general poplavkovy chamber. Fuel level in the poplavkovy chamber is supported by means of the needle valve operated by a float.

Primary (I) system of the carburetor (idling system) is responsible for configuration of an air and fuel mix on small and average turns of the engine and during acceleration. Also here gas mixture for engine start when the air zaslonka is closed is formed.

Secondary (II) (main dosing out) the system forms a mix for high turns and conditions of intensive loads of the engine.

The accelerating pump provides additional supply of fuel during engine acceleration by means of operated from draft of a butterfly valve of the plunzherny device with a control ball.

The device of automatic equipment of start is equipped with electroheating, and the special vacuum drive provides a butterfly valve priotkryvaniye at the moment of start of the cold engine, supporting that its working capacity at the initial stage.

The carburetor is equipped with the electromagnetic locking valve of interruption of supply of the fuel, operated from the ignition lock. At ignition switching off the valve blocks the channel of supply of fuel of idling, minimizing time of useless operation of the engine.

On models of 4.2 l supply of fuel is carried out by not maintainable mechanical gasoline pump established on the block of cylinders. On models of 3.0 l fuel moves the electric pump located in a fuel tank. For operation of the pump the special control unit located behind the protective panel under the assembly block of safety locks answers.