56 plate 2.4 auto Honda accord

We know the car been serviced etc plugs not changed the NGK  ones are £ 13 each to us  so you do the basics plugs and a scan then the Snapon No  live data for no 3  CYLINDER   compression check then checked the new plugs  the injector was fecked  factors no dealer's discontinued . The local lotus specialist had a box of 2nd hand one's  result we do all his tests and good lad  however the new Autel  managed to do what the up to date Snapon scanner could not which has had 4 updates at a cost  of more than the others we have now