| POSSIBLE CAUSE |
- Contaminated air cleaner element
- Improper ATF level (ATX)
- Brake dragging
- Clutch slippage (MTX)
- Improper coolant level
- Poor fuel quality
- Continuous memory DTC is stored
- Engine cooling system malfunction
- Spark plug malfunction
- Inadequate fuel pressure
- Restriction in fuel line
- Pressure regulator malfunction (built-in fuel pump unit)
- Fuel pump mechanical malfunction
- Fuel pump unit malfunction
- Improper operation of variable tumble control
- Improper operation of variable valve timing control system
- Restriction in exhaust system
- Contaminated MAF sensor
- Improper engine compression
- PCV valve malfunction
- Valve timing malfunction
- PCM malfunction
WARNING:
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
- Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
- Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this repair information. (See AFTER SERVICE PRECAUTION
.)
CAUTION:
- Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
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