Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Diagnostics of malfunctions of a power supply system

The engine is not started

Fuel level in the poplavkovy chamber is insufficient. Check giving of the fuel pump. Also check the needle valve on passableness and existence of signs of jamming.

Candles of the cold engine are filled in with fuel owing to excessively hard work a gas pedal during start. Hold a pedal released and repeat starting procedure before engine start.

Candles of the hot engine are filled in at excessively active using a gas pedal. Hold a pedal released while the engine will not be started. Make sure that the air zaslonka of automatic equipment of start is completely open.

On the models equipped with an observation port on the poplavkovy chamber of the carburetor, visually check fuel level in the chamber.
On models without an observation port shake the drive lever a butterfly valve, watching fuel injection in the primary chamber of the carburetor.
Check, whether there are violations of supply of fuel by a detachment of a submitting gasoline pipe line from the carburetor and a provorachivaniye after that no engine. To the gulf of the engine points a strong smell of gasoline and existence of traces of leakages of fuel on axes of butterfly valves.

See also checks described in subsection Check of a power supply system of the Section Problem diagnostics at start of the engine in road conditions.

The engine глохнет at work on single turns

Installation of turns and/or qualities of a mix of idling is broken. Check, in case of need modify installations by adjusting screws.

The block of starting automatic equipment is faulty. Check functioning of an air zaslonka and adjustment of turns of fast idling.

The poplavkovy chamber of the carburetor is filled in. If there is such possibility, check fuel level in the chamber through an observation port. Clean and blow the carburetor.

Passableness of a jet of idling or air jet is broken. Clean and blow the carburetor.

Weakened bolts of fastening of the carburetor to the inlet pipeline. Whether tighten bolts check there are no leakages of air.

Leaks through laying of a flange of the carburetor or the inlet pipeline take place. Check, replace defective laying. Leaks through laying of the inlet pipeline can be revealed by a way of wetting of a suspected site of a joint impellent oil (see an accompanying illustration).

The electromagnetic valve of interruption of supply of fuel is faulty. Check valve functioning, make necessary repair or replacement.

Supply of fuel in the carburetor is insufficient. Check serviceability of intake of fuel via the needle valve. Clean and blow the carburetor. Check passableness of gasoline pipe lines and the fuel filter, and also serviceability of functioning of the fuel pump.

Acceleration performance of the car is reduced

It is faulty, or the accelerating pump is blocked. Clean and blow the carburetor, replace defective components.

Driving draft of the accelerating pump is faulty. Check, make necessary repair.

The block of automatic equipment of start is faulty. Check functioning of an air zaslonka.

For check of a contour of the accelerating pump remove an air purifier and, holding an air zaslonka in open situation, manually move the lever of a drive of a butterfly valve. Through a mouth of the carburetor streams of fuel injected into it should be visible.

Ignition admissions take place

Before carrying out described below check and correction, make electric equipment diagnostics.

Fuel level fell in the poplavkovy chamber of the carburetor, or supply of fuel in the carburetor is broken. Check level, serviceability of the fuel pump and passableness of gasoline pipe lines and the fuel filter.

There was an obstruction of the main thing or a jet of high capacity. Disassemble the carburetor, blow jets.

The fuel pump is faulty. Replace.

Water got to the carburetor. Dry and clean a power supply system, replace the fuel filter.

The air podsasyvaniye between the fuel pump and a tank takes place. Eliminate leaks.

Check pressure of submission (pressure) and an expense of the fuel pump as it is described in appropriate section.
For moisture stock-taking in the carburetor remove the top cover. Procedures of removal of dismantling of the carburetor are in detail described in Head of the Power supply system and production of the fulfilled gases.

Fuel consumption is excessive

Fuel level in the poplavkovy chamber is excessively high. Check, make adjustment.

The filtering element of an air purifier is polluted. Make replacement.

The air zaslonka is partially closed. Check, make necessary corrections.

The pressure of the fuel pump is excessively high. Replace the pump.

Leaks from a fuel tank, gasoline pipe lines or via the filter take place. Check, make necessary replacements.

Jets are worn-out or damaged. Check, replace defective components.

Load of the accelerating pump is excessively great. Change a driving manner.

In most cases excessive fuel consumption appears is connected with violation of passableness of a filtering element of an air purifier which acts easily in film and checked visually. Also it is necessary to check installations and serviceability of functioning of automatic equipment of start.

Systems of injection of fuel and engine management
(models of 4.2 l of late years of release)

Given below check treat on category only the base. Besides it is necessary to start their performance only after results of the procedures listed in Sections of causes of failure devoted to diagnostics of start of the engine in road conditions will allow to argue firmly that the problem is connected with violations of functioning of systems of injection of fuel and engine management.
If performance described below checks does not give positive result, it is necessary to address for the help to specialists of dealer office of the manufacturing company of the car, having at the order special and very expensive diagnostic equipment.

In order to avoid receiving the traumas connected by receiving a strong electroshock, at performance of repair and diagnostic procedures on components of electronic system of ignition and near them it is necessary to observe extra care. Remember that at a secondary contour of system there is a high voltage hazardous to health

The engine is not started, or started with great difficulty

The ignition system is faulty. Check an external condition of contact plugs of the distributor, the coil of ignition and a powerful key of the target cascade. Plugs should be pure, free from products of corrosion and are reliably fixed. Check a condition of spark plugs and installation of interelectrode gaps. Check a cover and a distributor begunok on existence of cracks, coal paths of the scorched plugs (see an accompanying illustration). Check a condition of VV plugs of wires, measure their resistive resistance. Check a condition of the coil of ignition and a powerful key of the target cascade.

Supply of fuel is broken. Check the fuel pump, the relay of the fuel pump and pressure of fuel.

Injectors are faulty. Check an electric contour of injectors. Check a condition of fusible inserts.

The relay of management (ECCS relay) is faulty. Check the relay, in case of need replace.

Electric sockets of components of a control system of the engine are faulty. Check a condition of all electric sockets, smooth out plugs, track reliability of connections.

The engine is started, then глохнет

Installation of turns of idling or corner of an advancing of ignition is broken. Check, execute necessary adjustments.

Supply of fuel is broken. Check an electric contour of the fuel pump and pressure of fuel.

The ignition system is faulty. Check a condition of spark plugs and correctness of installation of an interelectrode gap. Check a cover and a distributor begunok on existence of cracks and coal paths. Check a condition of VV plugs of wires, measure their resistive resistance. Check a condition of all other terminal connections of system of ignition.

Leakages of air or depression loss take place. Check a condition and reliability of fastening on unions of the corresponding hoses.

Electroconducting of components of a control system of fuel is faulty. Check a condition and reliability of fastening of all terminal connections.

Ignition admissions in the engine take place

Spark plugs are faulty or polluted, or the interelectrode gap is incorrectly exposed.

The distributor cover is faulty. Check a cover on existence of cracks and moisture presence.

Wire VV are faulty. Check, execute necessary replacements.

The ignition coil is faulty. Check, in case of need make replacement.

Supply of fuel is broken. Check pressure of fuel. Check on passableness violation the fuel filter, lines and injectors.

Moisture got to fuel. Merge fuel, replace the fuel filter.

Fuel injectors are faulty. Check a condition of electric sockets and an electric chain of injectors.

The engine does not develop full capacity

The filtering element of an air purifier is hammered or passableness of an airintaking path is broken. Replace an element (see an accompanying illustration), or eliminate the blocking reason.

Adjustment of a cable of a drive of a butterfly valve is broken. Execute necessary adjustment, make sure of completeness of opening of a zaslonka.

Installation of a corner of an advancing of ignition is broken. Check, modify.

Supply of fuel is broken. Check pressure of fuel. Check passableness fuel the filter, lines and injectors. Make sure that vacuum hoses of a regulator of pressure of fuel are connected and are in good repair.

Passableness of system of production of the fulfilled gases is broken. Check a system condition, eliminate the blocking reason.

Fuel consumption is excessive

The filtering element of an air purifier is hammered or passableness of an airintaking path is broken. Replace an element, or eliminate the blocking reason.

There does not correspond to norm pressure of fuel. Measure pressure. Check passableness of the line of return of fuel.

External leaks in system of supply of fuel take place. Check on existence of signs of leaks shtutserny connections and power supply system components.

Internal leaks in system of supply of fuel take place. Check on existence of signs of leaks injectors.

Passableness of system of production of the fulfilled gases is broken. Check a system condition, eliminate the blocking reason.