With all the leading cowl and major spark plugs taken out, setup your borescope and laptop computer so there’s easy accessibility into the motor. I like positioning the borescope on a rolling cart. Start the Ablescope or Home windows camera app, whichever you like, on your own laptop. According to https://shopwebdirectory.com/listings13054331/the-definitive-guide-to-industrial-borescope-inspection-camera