Honda Civic/Acura Integra

since 1994 release

Repair and operation of the car



Honda Tsivik
+ Cars of the Honda Civic and Acura Integra brand
+ Maintenance instruction
+ Routine maintenance
+ Engine
+ Cooling system and heating
- Power supply system and release
   Specifications
   Dropping pressure in a power supply system
   Check of serviceability of functioning of the fuel pump/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 a fuel tank
   Cleaning and repair of a 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
   Removal and installation 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 fuel of injectors of fuel
   System of release - the general information
+ Electric equipment of the engine
+ Control systems of the engine
+ gear shifting Box
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Check of serviceability of functioning of the fuel pump/pressure of fuel

See preventions at the beginning Dropping pressure in a power supply system.


Check of pressure of fuel requires the special manometer with a wide range of a scale and a transitional nozzle for connection of the manometer to system of injection.

General checks

 PERFORMANCE ORDER

1. Make sure available of a gasoline tank of enough fuel.
2. Be convinced that the fuel pump really works. Ask the assistant to include ignition, having turned a key in the situation ON, – in a gasoline tank the characteristic sound of the working pump has to be heard for two seconds.

The working pump is well audible through an open mouth of a fuel tank. If the pump does not turn on, pass at once to check of its electric chain (see paragraph 9).

Verification of the pressure head characteristic of the fuel pump

 PERFORMANCE ORDER

1a. Connect the special manometer to the test union on the fuel filter (see accompanying illustrations).

1b. The transitional nozzle is rolled in an opening under installation of a service bolt (model for 1996 vyp.), or instead of a hollow bolt of nipple connection (model since 1997 vyp.) (see Dropping pressure in a power supply system).

2. Turn the ignition key in the situation ON (without starting the engine), track that To/in it was switched off. The fuel pump will turn on on couple of seconds – pressure in a power supply system has to rise (check the indication of the manometer) and to be stabilized.
3. Start the engine and warm up it on single turns up to the normal working temperature. Compare the indication of the manometer to requirements of Specifications. Now disconnect a vacuum hose from the fuel pressure regulator – pressure has to rise immediately, besides to the value stipulated in Specifications.

4. If at the connected vacuum hose pressure exceeds norm, by means of the manual vacuum pump (see an accompanying illustration) create depression of 305÷355 mm of mercury in depth in the regulator. If pressure falls, check serviceability of functioning of a source of depression, otherwise replace the regulator.


5. If results of measurement of pressure exceed the limit of admissible range, execute the following checks:
   a) If pressure is excessively high, check serviceability of giving for the depression regulator (see an accompanying illustration). Depth of depression has to fluctuate with change of turns of the engine. If depression is present, check a state and passability of a hose/tube of return of fuel. If the returnable line as it should be, replace the regulator.

   b) With excessively small pressure replace the fuel filter, having excluded probability of violation of its passability. If replacement of the filter does not help to correct a situation, install the locking gate on a site between the regulator and the returnable fuel line (instead of the gate it is possible to establish a piece of a flexible hose which can be easily pressed by nippers or a clamp). Start the engine and start blocking slowly the gate / to press a hose. If pressure rises above value of 3.2 kgfs/cm 2, replace the regulator (see Removal and installation of the case of a throttle).

Do not allow rise in pressure over 4.2 kgfs/cm 2. Do not press actually returnable fuel line in order to avoid risk of its damage.


   c) If pressure remains excessively low even at the blocked returnable line, check for existence of leaks an injection injector(s) (see Removal and installation of the fuel highway and injectors of fuel of injectors of fuel). Also check serviceability of the fuel pump.
6. Having finished check, dump pressure (see Dropping pressure in a power supply system) and disconnect the manometer.

Check of an electric chain of the fuel pump

More detailed information on the scheme of an electric chain of the fuel pump contains in the Head Onboard electric equipment.


 PERFORMANCE ORDER

1. If the fuel pump at inclusion of ignition does not function (from a gasoline tank characteristic sounds are not audible), check a condition of a safety lock of the main thing (PGM-FI) of the relay of system of injection (see the Head Onboard electric equipment). Replace the beaten-out safety lock and repeat check. If after replacement of a safety lock the pump starts working, check an electrical wiring of its chain for existence of signs of short circuit on a site between the PGM-FI relay and the pump.
2. If replacement of a safety lock does not lead to restoration of functioning of the pump, check serviceability of giving of food for the last. Remove a back seat and make sure available battery tension the pump socket of a service cover of assembly of the pump/sensor of fuel consumption. If food moves regularly, replace the pump.

3a. If the pump is not powered, check a PGM-FI relay contour. Ask the assistant to turn several times a key in the ignition lock from the situation OFF in the situation ON and back (without starting the engine). Thus watch emergence of tension of the battery on the relay socket. The Civic models – the relay is located under a fairing on the right.

3b. The Integra models – the relay is located under a fairing at the left.

3s. At the included ignition tension has to move on plugs 5 and 7 (see accompanying illustrations). If food does not move, check a chain for existence of breaks or short circuit (see schemes of electric connections in the Head Onboard electric equipment of the present manual).


On some models the sensor switch of pressure of oil works pressure drop of oil below some preset value as the locking valve, blocking fuel supply – check the sensor switch and an electrical wiring of its chain (see schemes of electric connections in the Head Onboard electric equipment).

The anticreeping system provides a fuel supply immobilization. Refusal of system will not allow to make start of the engine. Check also a chain of the anticreeping alarm system.

4. At correct giving of food remove the relay for check. A wire crossing point connect the positive plug of the battery to the plug of 2 nests of the relay. Ground the plug 1. Then by means of an ohmmeter make sure available conductivity between plugs 4 and 5. If conductivity is absent, replace the relay.
5. With conductivity connect the positive plug of the battery to the plug of 5 relays, ground the plug 3. Now conductivity has to take place between plugs 6 and 7 otherwise replace the relay.
6. If conductivity takes place, give food on the plug 6, ground the plug 1 and check conductivity between plugs 4 and 5. In the absence of conductivity replace the relay.