8.4 Tooth / trigger logger and troubleshooting RPM issues 8 TROUBLESHOOTING AND DATA LOGGING
The above picture shows a 60-2 crank wheel during cranking. Note that the missing tooth is three times the
height of the other tooth marks, instead of twice the height as on a 36-1.
Tooth log of 60-2 showing incorrect VR sensor wiring. Two somewhat long teeth instead of one very long tooth.
In this situation the engine might get sync some of the time. Test it by change input capture polarity to Falling, if
that helps then swap VR sensor wires and return input capture setting to Rising.
Composite log of a Nippon Denso ignition with a 24 tooth cam wheel (on the crank input channel) and a 1 tooth
cam wheel.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 297
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