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10.3.5.
El Primary
Measures and compares electrical ignition primary waveforms.
Path:
EI PRIMARY
BLACK TO ENGINE CHASSIS
RED TO NEGATIVE SIDE OF
THE COIL PRIMARY
10.3.6.
El Secondary
Measures and compares electrical ignition secondary waveforms.
Measures and compares distributor ignition secondary waveforms.
* You need optional capacitive pick-up to measure EI Secondary.
Path:
EI SECONDARY
CONNECT THE CAPACITIVE
PICKUP AND INDUCTIVE
PICKUP
Normal EI PRI waveform
Normal EI Secondary waveform
10-23
EI Primary
Look for abnormally long or short
dwell periods in the waveform.
EI Primary
Compare measured waveform
with reference waveform.
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