Basic Troubleshooting

BASIC TROUBLESHOOTING
When checking engine troubles, it is important to start with an inspection of the basic systems. If the abnormal conditions, such as (A) engine start failure, (B) unstable idling or (C) poor acceleration, are observed, begin by checking the following basic systems.
1. Power supply
1. Battery
2. Fusible link
3. Fuse
2. Body ground
3. Fuel supply
1. Fuel line
2. Fuel filter
3. Fuel pump
4. Ignition system
1. Spark plug
2. High-tension cable
3. Ignition coil
5. Emission control system
1. PCV system
2. Vacuum leak
6. Others
1. Ignition timing
2. Idle speed

Troubles with the MFI system are often caused by poor contact of the harness connectors. It is important to check all harness connectors and verify that they are securely connected.