If you’re ever driving in a new car, it’s a good idea to take it for a test drive. This is especially true if you’re not sure if the engine is working properly. To do this, you’ll need to remove the engine cover and remove the spark plugs. Be sure to do this carefully so as not to damage the engine. Next, remove the air filter and clean it thoroughly. Be sure to dry it off before putting it back on. Now, replace the spark plugs and cover the engine again. Make sure everything is tight before driving away.