Itm Accutek III, Руководство по эксплуатации

Страница: 10 / 30

Note how the spark travels from the secondary tower to ground. In
many cases, when the ignition coil integrity has been compromised, the
spark will consistently go to ground through a hole or crack in the sec-
ondary insulating material which may be virtually impossible to see
under normal operation but becomes very evident in this type of test.
In other cases, there will be some foreign contaminant on the high volt-
age insulator allowing the secondary high voltage spark to “travel”
along the insulator with little or no resistance - allowing a portion of the
intended insulator to become partially or completely inefficient. These
problems may disappear with new plugs and light engine loads but tend
to resurface with increased ignition demands.
Typically, TRANSFER readings are very consistent when testing iden-
tical ignition coils (same manufacturer and model). TRANSFER read-
ings are usually between 20 to 50 microseconds for standard duration
coils and somewhat longer for long duration coils (due to the higher coil
primary resistance). ENERGY readings are a product of selected volt-
age and measured TRANSFER results.
An LCD display of “LLL” or a reading that is considerably lower than
that of other similar ignition coils could indicate a defective ignition
coil.
An LCD display of “HHH” or a reading higher than that of other
similar ignition coils could indicate high resistance or a defective
ignition coil.
When firing ignition coils, a displayed reading of HHH will force the
internal oscillator to shut down for safety precautions. Oscillator
output can be re-established by turning the TEST switch from the
COIL/IGN position to any other position and then returning it back
to the COIL/IGN position.
www. .com
information@itm.com 1.800.561.8187