Fault-Tracing Information

Uneven Idling

Trouble Code Condition(s)
- Diagnostic trouble codes (DTCs) absent
- Engine is hot.

Possible Source(s)
- Defective spark plugs
- Blocked/leaking injectors
- Uneven compression
- Defective distributor cap, rotor or ignition cables
- Faulty sensor signals.
- Moisture in spark plug wells
- Faulty valve clearance
- Incorrectly adjusted camshafts

^ Start fault-tracing at Checking Blocked Injectors section.