Laser AWD L4-1997cc 2.0L DOHC Turbo (1992)
Spark Plug: Adjustments
Spark Plug Gap
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.
TURBO
Standard value: .039 - .043 in (1.0 - 1.1 mm)
NON-TURBO
Standard value: .028 - .031 in (0.7 - 0.8 mm)
5. Tighten spark plug to specified torque. If overtorqueing occurs, damage to threaded portion of cylinder head might result.
Spark plug torque: 15-21 ftlb (20 - 30Nm)