INSPECTION
1.

Disconnect the spark plug cable from the spark plug.

note

Pull on the spark plug cable boot when removing the spark plug cable, not the cable, as it may be damaged.

2.

Using a spark plug socket, remove all spark plugs from the cylinder head.

caution

Take care not to allow contaminants to enter through the spark plug holes.

3.

Check the spark plugs for the following :

(1)

Broken insulator

(2)

Worn electrode

(3)

Carbon deposits

(4)

Damaged broken gasket

(5)

Condition of the porcelain insulator at the tip of the spark plug

4.

Check the spark plug gap using a wire gap gauge, and adjust if necessary.

Standard value :

Unleaded : 1.0 ~ 1.1mm (0.039 ~ 0.043 in.)

5.

Re-insert the spark plug and tighten to the specified torque.

If it is over torqued, damage to the thread portion of cylinder head might result.

Tightening torque :

20 ~ 30 Nm (204 ~ 306 kg·cm, 15 ~ 21 lb·ft)

ANALYZING SPARK PLUGS

Condition

Dark deposits

White deposits

Description

o Too rich a fuel minture

o Low air intake

o Too lean a fuel mixture

o Advanced ignition timing

o Insufficient plug tightening

SPARK PLUG TEST (WHEN ENGINE CAN BE CRANKED)
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