Hyundai Accent

Repair and car operation

Malfunctions of system MFI are often caused by bad contacts in sockets of a plait of wires. Therefore check up reliability of connection of all sockets.


The prevention

Before check of frequency of rotation of idling be convinced, that spark plugs, fuel atomizers, the modulator of frequency of rotation of idling (ISC), a compression etc. are in an order.

Check conditions

Hyundai Accent
+ 1. The maintenance instruction
+ 2. The engine
+ 3. Greasing system
+ 4. Cooling system
+ 5. The control, toxicity decrease
- 6. Fuel system
   6.1. Specifications (SOHC and DOHC)
   6.2. Check of the fuel pump
   6.3. Check of the pressure created by the fuel pump
   6.4. Checks of system of injection MFI
   6.5. A control lamp of malfunctions (MIL)
   6.6. Diagnostic codes of malfunctions ŤOBD-IIť
   6.7. Diagnostic codes of malfunctions, except ŤOBD-IIť
   6.8. Replacement of the fuel filter
   6.9. Replacement of the terminator of overflow (the double-thread valve)
   6.10. Replacement of the gauge of level of fuel
   6.11. A control system of engine MFI
   6.12. Fuel atomizers
   6.13. Throttle knot
   6.14. The power supply system with the carburettor
   6.15. Check of frequency of rotation of idling
   6.16. Adjustment of frequency of rotation of idling
   6.17. Frequency of rotation of idling and adjustment of a fuel mix
   6.18. Check and starting arrangement adjustment
   6.19. Check and adjustment of a free course of a cable of an accelerator
   6.20. A fuel tank
   6.21. The canister of catching of steams of fuel
   6.22. Replacement of the fuel filter
   6.23. The carburettor
   6.24. A cable and an accelerator pedal
   6.25. Search and elimination of malfunctions of fuel system with the carburettor
+ 7. Ignition system
+ 8. Coupling
+ 9. A transmission
+ 10. Axes and power shafts
+ 11. A suspension bracket
+ 12. A steering
+ 13. Brake system
+ 14. A body
+ 15. A central air
+ 16. The electric equipment
+ 17. The appendix
+ 18. Electroschemes

6. Fuel system


By search of malfunctions of the engine begin with check of working capacity and survey of the basic systems. If the engine work, unstable frequency of rotation of a cranked shaft idling or insufficient acceleration is broken, check up following basic systems:

1. An electric food:

– The battery;
– A burnt through crosspiece;
– The fuse.

2. Connections with "weight"

Fuel giving:

– The fuel filter;
– The fuel pump.

Ignition system:

– A spark plug;
– High-voltage wires;
– The ignition coil.
5. System of decrease in toxicity of the fulfilled gases:

– Ventilation system картера;
– Vacuum leak.
6. Others:

– Installation of a corner of an advancing of ignition;
– Frequency of rotation of idling.
1. The engine should be прогрет to temperature of a cooling liquid 80–95°C.
2. Headlights, dimensional illumination, the fan of a radiator and all consumers of electric energy should be switched off.
3. The transmission should be established in neutral position.
4. The steering wheel should be established for movement directly forward.


1. Connect a tachometre to a primary winding of the coil of ignition or the scanner to a diagnostic socket.
2. Start up the engine and leave it to work on frequency of rotation of a cranked shaft idling.
3. No more, than on 5 with increase frequency of rotation of a cranked shaft to 2000–3000мин–1 then allow to it to work idling within 2 minutes
4. On a tachometre define frequency of rotation of idling.