2016 Mercedes-Benz AMG GT S Used Cars in Charlotte, NC 28212. Avg. Dealer Rating: (5 reviews) They have been so great, answered all of my questions and very patient with me when I wasn't immediately responsive due to illness. They worked everything out for an out-of-state sale.
By examining the spark plugâs insulator color, even a less-than-mechanically-inclined person can determine valuable information about the engineâs overall operating condition. Normal: Grey to Light Golden-Brown Color. This condition is ideal, the spark plug and engine air/fuel mixture are operating properly.
A properly functioning spark plug helps to ensure the emissions from your vehicle are kept at a minimum. Deteriorated spark plugs can decrease your vehicleâs fuel economy due to incomplete combustion. As your spark plug wears, the gap between the plug electrodes can either expand or close up. Either of these conditions can negatively affect your engineâs fuel economy and emissions.