IGNITION SYSTEM
TROUBLESHOOTING
TROUBLESHOOTING
Perform the following ignition system tests when engine
is
hard to start to determine if the cause is
in
the
ignition
or
other system.
START
+
Sparks
Check ignition timing by
NO
Check spark condition
using timing
light.
(Set tester gap at 5/16)
(5° ATDC at 1000 RPM)
+
No or weak sparks
Check if the spark
plug
is
in
good condition
NO
(Refer to SPARK PLUGS on p. 56).
Replace the spark plug with new one.
+
OK
Disconnect the engine stop switch wire
Sparks
Check and/or replace the engine stop switch.
(Blue/Red) (Refer to page 100).
+
No or weak sparks
Check ignition
coil resistance
(Refer to page 99).
Out of Soec.
Primary:
0.2 -
0.40
Replace the ignition coil
Secondary: 6.8 - 10.2 kO
+ OK
Check spark plug cap for any evidence of
NO
high-tension leak.
Replace the spark plug cap.
+ OK
Check spark plug cap resistance.
Out of Soec.
Cap resistance: 8 -
12
kO
Replace the spark plug cap.
~
OK
Check condenser charge coil resistance.
(Refer to page 97).
Out of Soec.
Replace the coil
Coil resistance: 12.5 - 18.8 0
~
OK
Check the pulse coil resistance.
(Refer to page 98).
Out
of
S~ec.
• Replace the coil
Coil resistance: 148 - 222 0
~
OK
Check the COl unit.
Out of Spec.
..
Replace the COl unit.
(Refer to page 100).
96
E
o
U
Qj
)(
~
Qj
~
ii
E
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