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.
Clarithromycin is another antibiotic treatment for walking pneumonia. It is more powerful than even erythromycin as it is also used to help treat HIV/AIDS patients. It works by interfering with the protein synthesis of bacteria, which prevents them from growing further. It is given in the form of tablets or a gel.
There is no simple answer. Pneumonia can be caused by chemicals, viruses and bacteria, by not breathing properly when bedridden, by immune system problems and other causes. The first thing you need to know is the cause of the person's pneumonia. When you know the cause, you can look at treatments. If a normally healthy young person has a pneumonia caused by a bacteria or germ, and if that germ is easily destroyed by ordinary antibiotics, recovery will take a few weeks.