6-13
Checking of Ignition coil (cont.)
Next, check the behavior during engine’s run as the following order.
Fig. 6-13-1
Purpose:
Clarify the cause of stall and poor acceleration resulting from; vanishment of sparks or the other reasons.
[1] Attach Alligator clip to Spark
plug.
[2] Turn Spark distance adjusting knob so that the spark
distance in Spark window reduces to 4 mm.
(When the distance is narrow, you cannot see the spark.
When the distance is still wide such as 6mm distance,
Ignition coil may break.)
Spark window
[3] Start Engine, and check that the sparks are found out continuously during idling, after that, while accelerating the rpm
of engine to the maximum gradually.
Note:
Some models’ ignitions stop the sparks to protect engine as soon as the rpm reaches the maximum.
In case the sparks cannot be seen once or more in ten times/ the sparks cannot be generated when the rpm is over a certain
level, replace Ignition coil with a new one.
When the behavior of engine is abnormal during check meanwhile the spark is normal, detect the parts except Ignition
coil.
Note:
Quick check is required. The long checking could result in melting of the cover of Alligator clip.
25 / 40