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.
The first thing to do is find out what kind of pneumonia you have. Is it viral or bacterial. If it is viral, the best thing to do is practice proper sanitation, protect yourself from the harsh elements of the environment by using diet and exercise to boost your immune stystem. Do not smoke, if you smoke, quit.