Sonata V6-3.0L (1991)
Ignition Cable: Testing and Inspection
INSPECTION OF SPARK PLUGS
1. Disconnect spark plug cable from the spark plug. If the spark plug cable is removed by pulling on the cable, it may be damaged.
2. Using a plug wrench, remove all plugs from cylinder head.
CAUTION: Use care not to allow foreign matter to enter through plug holes.
3. Check the spark plugs for the following:
Broken insulator
Worn electrode
Carbon deposits
Damaged or broken gasket
Burnt condition of porcelain insulator at spark gap.
NOTE: Dark deposits indicate too rich a fuel mixture, light (white) deposits indicate too lean a fuel mixture, advanced ignition timing or
insufficient plug tightening
4. Check plug gap using a plug gap gauge and adjust if necessary.
Standard value: 1.0-1.1mm (0.039-0.043in.)
5. Tighten spark plug to specified torque. If overtorqueing occurs, damage to threaded portion of cylinder head might result.
Spark plug torque: 20-30Nm (204-306 kg.cm, 15-21 lb.ft)
INSPECTION OF SPARK PLUG CABLES
1. Check end caps and outer shell for cracks.
2. Measure resistance.
Standard value:
Coil lead.................Approx. 2.7kohm
Spark plug cable No.1......Approx. 10.6kohm
Spark plug cable No.2......Approx. 13.1kohm
Spark plug cable No.3......Approx. 16.7kohm
Spark plug cable No.4......Approx. 22.1kohm
