| POSSIBLE CAUSE |
Clattering sound is heard:
- Malfunction in piston or valve system
Jingling sound is heard:
- Timing chain flopping or poor engagement
Gee-gee sound is heard:
- Malfunction in electric variable valve timing system
Sound of metal rubbing against each other is heard:
- Malfunction in valve system or hydraulic lash adjuster (HLA)
- Malfunction in fuel injector
Sound similar to crickets is heard:
- Malfunction in high pressure fuel pump
Squeaking noise is heard:
Squealing noise is heard:
- Malfunction in generator
- Gear noise
Rattling sound is heard:
- Malfunction in drive belt bearing
- Malfunction in exhaust system insulator
Hissing sound is heard:
- Air suction from intake-air system
- A/C gas flowing sound
Knocking or put-put sound is heard:
- Purge solenoid valve operation sound
Click-clack sound is heard:
- A/C compressor magnetic clutch operation sound
- Cooling fan relay operation sound
- Solenoid valve poor assembly
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 injury 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 article. (See BEFORE SERVICE PRECAUTION
.) (See AFTER SERVICE PRECAUTION
.)
CAUTION:
- Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the 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 matter.
NOTE:
- Verify abnormal sound using a stethoscope.
|