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.
Step 3. Locate the gas control knob. Just above it, you should see a red or black push button, which means that the unit has a piezoelectric spark mechanism. Press the button once or twice to verify that there is a spark at the end of the pilot tube. If you don't see a button, you must light the flame manually.