3-18
INSP
ADJ
E
GENERAL
1
2
a
b
a
377-004
Spark plugs
1. Remove:
9
Spark plug
2. Check:
9
Spark plug type
3. Inspect:
9
Electrodes
1
Cracks/excessive wear
→
Replace.
9
Insulator color
2
Distinctly different color
→
Check the
engine condition.
4. Clean:
9
Spark plugs
(with a spark plug cleaner or wire
brush)
5. Measure:
9
Spark plug gap
a
(with a wire gauge)
Out of specification
→
Regap.
6. Tighten:
9
Spark plugs
Color guide:
Medium to light tan color:
Normal
Whitish color:
8
Lean fuel mixture
8
Plugged jet(s)
8
Wrong setting
Blackish color:
8
Rich mixture
8
Defective ignition system
8
Excessive idling
8
Wrong spark plug
Spark plug gap:
0.9 mm (0.04 in)
Spark plug:
18 Nm (1.8 m•kg, 13 ft•lb)
Spark plug type (NGK):
DPR6EA-9
