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This turned out to be a fun one :)
2001 Chevy S10 XTREME, setting a P0300 with a FLASHING Check Engine Light.
However, engine runs perfectly smoothly...so why is it picking up FALSE MISFIRES??
History of the truck is questionable, with every electrical part under the hood replaced, mostly with CHEAP AFTERMARKET GARBAGE.
Let's see if we can pinpoint the root cause of the false misfires, and using an oscilloscope, actually PROVE that we fixed the issue for good :)
IVAN'S PICO WAVEFORMS:
drive.google.com/drive/folder...
Enjoy!
Ivan