No Spark At Either Ignition Group; No Spark At One Plug (Trouble In Secondary Coil Side) - Honda Nighthawk CB 750 1991 Service Manual

Ignition System
No Spark At Either lgnition Group
.
If there is no spark at either group, the problem is suspected in the primary coil side of the ignition system (ignition coil.
or unit and ignition coil circuit).
"No Spark"
Remove the faulty pair ignitioin coil and check the
ignition coil resistance (page
14-7),
faulty pair
I
I
"No Spark" condition
shifts to other pair
I
~bndrmal
4
Faulty ignition coil
Faulty spark plug wire
Out of
standard-.
Poor or loose contact
of ignition
coil connectors
spark unit connector (page 14-6).
value Open circuit between the unit and ignition coil
I
1
Faulty spark unit
No Spark A t One Plug (Trouble In Secondary Coil Side)
-
Faulty spark plug is most likely.
Replace (suspected bad spark plug) with known
t
Spark-. Original spark plug no good.
good spark plug and conduct spark test.
Put the spark plug wire on and measure
,"",,,,a,-
tance of ignition secondary coil (page 14-7).
I
Out of star(dard value
I
S ~ a r k
Remove the spark plug wirerand measure the
Out of
resistance of the ignition secondary coil (page
standard
- 0
1
Faulty ignition coil
14-71,
value
I
Good
i
.
Poor contact of spark plug wire
.
Faulty spark plug wire