As specified in the subject, i have gone through threads specifying that the gap of the spark plugs have to be adjusted for optimum performance of the engine. To be honest, i have never seen any mechanic adjusting the gap while changing plugs.
Recently, i changed spark plugs of my Nissan March, OEM, NGK irridium and the mechanic simply put them in place of the old ones. Question is whether i should get the gap adjusted?
If yes, how much for my vehicle?
Waiting for the experts for their opinion.