Spark Tester

This Spark Tester provides a quick and simple way of determining the
condition of the ignition coil by judging the sparks color and arc jump pattern.
It can be tested on Coil-On-Plug (COP), Coil-Near-Plug (CNP), Double Ended
Coil-On-Plug (DECOP) or wasted sparks and the conventional Ignition Coils.

 Normal Sparks                                            Abnormal Sparks

Operation:

Adjust the spark tester gap to 20mm (normally) and notice the spark produced.
Straight and violet blue in color indicates the ignition coils is NORMAL. If the coil
has aged or defects, the spark is either red or curved in shaped.

For higher compression ratio engines, bigger spark gaps are needed. In order to

get better results, the tester spark gap needs to be adjusted when doing the test.