Theres a guy up here that uses that exact same advert for his `diagnostic` business, typical clown with a £30 ebay special laptop.

This guy diagnosed a tdci transit as needing a cam sensor, owner fitted it and it still wouldnt go.He calls the guy to go back to have another look but hes fully booked for at least two weeks...
I went to it, didnt even plug it in and diagnosed a snapped timing chain.
The total lack of compression and a bulge in the timing case gave it away !