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.
Walking pneumonia (First question answer: Pneumonia doesn't walk, but patients with walking pneumonia do!) is an imprecise term used to describe a person with symptoms of pneumonia that are mild enough to allow people to do daily activities and do not require patient hospitalization; it does not describe the cause of the pneumonia-like symptoms and is often used as a preliminary diagnosis without good evidence (a chest X-ray or other tests) that pneumonia is actually present.