Timing going crazy using scan tool

CaptainXL

Original poster
Member
Dec 4, 2011
2,445
I was monitoring my timing at idle using torque app and I notice the ignition timing going up and down slowly from 10 to 23. Is this an indication of knock or some other part such as a bad camshaft position sensor? Or is it normal for the timing to vary wildly at idle?
 

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