GMC, spark plug replacement in Zevulun

GMC, spark plug replacement in Zevulun.
It is time to change the spark plugs if you notice carbon deposits, sediments or signs of the electrode melting on them. Other signs of malfunctions may include engine starting difficulties, thrust reduction, fuel consumption increase, and the absence of response when the gas pedal is pressed sharply. To replace the spark plugs, remove the protective cover from the engine, remove the terminal from the spark plug, unscrew the plug from the seat. After that, install a new spark plug and connect a terminal to it.