Fuel System Trouble in General: Inspection
TROUBLE AND POSSIBLE CAUSE DESCRIPTIONS
| Trouble and possible cause | Corrective action | |
|---|---|---|
| 1. Insufficient fuel supply to the injector | ||
| a) | Fuel pump will not operate. | |
| O Defective terminal contact. | Inspect connections, especially ground, and tighten securely. | |
| O Trouble in electromagnetic or electronic circuit parts. | Replace fuel pump. | |
| b) | Lowering of fuel pump function. | Replace fuel pump. |
| c) | Clogged dust or water in the fuel filter. | Replace fuel filter, clean or replace fuel tank. |
| d) | Clogged or bent fuel pipe or hose. | Clean, correct or replace fuel pipe or hose. |
| e) | Air is mixed in the fuel system. | Inspect or retighten each connection part. |
| f) | Clogged or bent breather tube or pipe. | Clean, correct or replace air breather tube or pipe. |
| g) | Damaged diaphragm of pressure regulator. | Replace. |
| 2. Leakage or blow out fuel | ||
| a) | Loosened joints of the fuel pipe. | Retightening. |
| b) | Cracked fuel pipe, hose and fuel tank. | Replace. |
| c) | Defective welding part on the fuel tank. | Replace. |
| d) | Defective drain packing of the fuel tank. | Replace. |
| e) | Clogged or bent air breather tube or air vent tube. | Clean, correct or replace air breather tube or air vent tube. |
| 3. Gasoline smell inside of compartment | ||
| a) | Loose joints at air breather tube, air vent tube and fuel filler pipe. | Retightening. |
| b) | Defective packing air tightness on the fuel saucer. | Correct or replace packing. |
| c) | Cracked fuel separator. | Replace separator. |
| d) | Inoperative fuel pump modulator or circuit. | Replace. |
| 4. Defective fuel level indicator | ||
| a) | Defective operation of fuel level sensor. | Replace. |
| 5. Noise | ||
| a) | 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.
To prevent water condensation.
- Top off the fuel tank or drain the fuel completely.
- Drain water condensation from the fuel filter.
- Refilling the fuel tank.
Refill the fuel tank while there is still some fuel left in the tank.
- Protecting the fuel system against freezing and water condensation.
- Cold areas
In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop below 0°C (32°F) throughout the winter season, use an anti-freeze solution in the fuel tank. Refueling will also complement the effect of anti-freeze solution each time the fuel level drops to about one-half. After the winter season, drain water which may have accumulated in the fuel filter and fuel tank in the manner same as that described under damaged areas below.
- Damaged areas
If water accumulated in the fuel filter, drain water from both the fuel filter and fuel tank or use a water removing agent (or anti-freeze solution) in the fuel tank.
- Cold areas
- Observe the instructions, notes, etc., indicated on the label affixed to the anti-freeze solution (water removing agent) container before use.