No, diesel engines don't have ignition coil as they work on compression ignition and not on spark ignition as in diesel engines. Glow plugs used in diesel are like small electric heaters which use the mechanism of heating due to resistance during electrification.
Walking pneumonia is generally treated with antibiotics. Mild infections are often not treated because they tend to clear on their own. With treatment, most people begin to feel better within a few days. Many over-the-counter medicines used for colds and flus may not help with complete relief of symptoms of walking pneumonia. It's important to talk with your doctor about any medicines you are taking or planning to take.
Symptoms of walking pneumonia are typically mild, hence, patients may not even realize they have it, confusing the condition with a cold. Common symptoms of walking pneumonia include chills, cough, headache, fever, muscle aches, muscle stiffness, loss of appetite, shortness of breath, and rapid breathing. In mycoplasma pneumonia specifically, a rash may appear, while those with legionella pneumonia may also experience diarrhea and confusion.