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.
Spark Plugs and Spark Plug Wires. Spark Plugs deliver electric current from the ignition system to the engine to ignite the engineâs fuel and air mixture. Bad spark plugs can cause a car hesitates, jerks, or shakes during acceleration or driving. If the spark plugs are new but you see incomplete electric spark, check on the spark plug wires.