SAAB WIS ONLINE

INSPECTION

INSPECTION

Trouble and possible cause

Corrective action

1. Insufficient fuel supply to injector

1)

Fuel pump does not operate.

o

Defective terminal contact.

Inspect contact, especially ground, and tighten it securely.

o

Trouble in electromagnetic or electronic circuit parts.

Replace the faulty parts.

2)

Lowering of fuel pump function.

Replace the fuel pump.

3)

Clogged dust or water in the fuel filter.

Replace fuel filter, clean or replace fuel tank.

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 air breather tube or pipe.

7)

Damaged diaphragm of pressure regulator.

Replace.

2. Leakage or blow out of fuel

1)

Loosened joints of the fuel pipe.

Retightening.

2)

Cracked fuel pipe, hose and fuel tank.

Replace.

3)

Defective welding part on the fuel tank.

Replace.

4)

Defective drain packing of the fuel tank.

Replace.

5)

Clogged air breather tube or air vent tube.

Clean, correct or replace 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.

Retightening.

2)

Defective packing air tightness on the fuel saucer.

Correct or replace the packing.

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 fuel fully to prevent those problem. And also drain the water condensation from fuel filter.

• In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop below 0°C (32°F) throughout the winter season, use water removing agent in the fuel system to prevent freezing fuel system and accumulating water. Fill the water removing agent at the time when the fuel reduced at half to maintain the advantage.

• When water condensation is noticed in the fuel filter, drain the water from both the fuel filter and fuel tank or use water removing agent in the fuel tank.

• Before using a water removing agent, follow the cautions that noted on the bottle.