Legacy Sedan 2WD F4-2.2L SOHC (1990)
Spark Plug: Testing and Inspection
REMOVAL
1.
Twist and pull to remove ignition wire from plug.
2.
While wearing safety glass, use compressed air to blow out debris from plug well.
3.
Using a 5/8" (16mm) socket, remove the plug in CCW direction.
CAUTION:Use care not to allow foreign matter to enter through plug holes.
INSPECTION
1.
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
2.
Check plug gap using a plug gap gauge and adjust if necessary.
ELECTRODE CLEARANCE
0.039 - 0.043in (1.0 - 1.1mm)
INSTALLATION
1.
Adjust electrode gap.
ELECTRODE CLEARANCE
0.039 - 0.043 in (1.0 - 1.1 mm)
2.
Lightly coat threads of plug with anti-seize compound.
3.
Install and thread plug into cylinder head by hand.
4.
Torque spark plug.
TORQUE VALUE
13 - 17 ft lb (18 - 24Nm)
5.
Apply dielectric compound to the inside of ignition wire boot and install. A slight click will be heard when wire is properly connected.
6.
Tighten spark plug to specified torque. If overtorqueing occurs, damage to threaded portion of cylinder head might result.
RECOMMENDED SPARK PLUGS
BRAND
PART NO.
---------------------------------
NGK
BKR6E-11
NIPPONDENSO K20PR-U11
CHAMPION
RC7YC-4