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.
It's important to install spark plugs with the correct reach, or thread length. Spark plugs can vary in reach from 0.095 to 2.649 cm (0.0375 to 1.043 in), such for automotive and small engine applications. Also, a marine spark plug's shell is double-dipped, zinc-chromate coated metal.