Andy, Attached is a waveform file using a Snap-on MODIS and a FirstLook Sensor on a 2000 Chev S10 PU 4 Cyl DIS Waste Spark Ignition System. [2000 Chevrolet S10 Pickup, Vacuum/Pressure/Flow Waveform] The MODIS CH1 (Yellow) is using the Ignition kV Probe on Cyl ... Login to read more.

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