Fuel System Trouble in General: Inspection
FUEL SYSTEM - TROUBLESHOOTING CHART
| Trouble and possible cause | Corrective action | ||
|---|---|---|---|
| 1. Insufficient fuel supply to injector | |||
| 1) | Fuel pump does not operate. | ||
| ◦ | Defective terminal contact | Inspect contact, especially ground, and tighten it securely. | |
| ◦ | Trouble in electromagnetic or electronic circuit parts | Replace the faulty parts. | |
| 2) | Decline of fuel pump function | Replace the fuel pump. | |
| 3) | Clogged fuel filter | Replace the fuel filter. | |
| 4) | Clogged or bent fuel pipe or hose | Clean, correct or replace the fuel pipe or hose. | |
| 5) | Air is mixed in the fuel system. | Inspect or retighten each connection part. | |
| 6) | Clogged or bent air breather tube or pipe. | Clean, correct or replace the air breather tube or pipe. | |
| 7) | Damaged diaphragm of pressure regulator | Replace. | |
| 2. Leakage or blow out of fuel | |||
| 1) | Loose joints of the fuel pipe | Retighten. | |
| 2) | Cracked fuel pipe, hose and fuel tank | Replace. | |
| 3) | Defective welding part on the fuel tank | Replace. | |
| 4) | Defective drain gasket of the fuel tank | Replace. | |
| 5) | Clogged or bent air breather tube or air vent tube | Clean, correct or replace the air breather tube or air vent tube. | |
| 3. Gasoline smell inside of compartment | |||
| 1) | Loose joints at air breather tube, air vent tube and fuel filler pipe | Retighten. | |
| 2) | Fuel saucer gasket air tightness fault | Correct or replace the gasket. | |
| 3) | Inoperative fuel pump modulator or circuit | Replace. | |
| 4. Defective fuel meter indicator | |||
| 1) | Defective operation of fuel level sensor | Replace. | |
| 2) | Defective operation of fuel meter | Replace. | |
| 5. Noise | |||
| 1) | Large operation noise or vibration of fuel pump | Replace. | |
NOTE:
- When the vehicle is left unattended for an extended period of time, water may accumulate in the fuel tank. Fill the fuel tank fully to prevent this.
- In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop below 0°C (32°F) throughout the winter season, use a water removing agent in the fuel system to prevent freezing fuel system and accumulating water.
- When water is accumulated in fuel filter, fill the water removing agent in the fuel tank.
- Before using water removing agent, follow the cautions noted on the bottle.