Diesel engine does not have an ignition coil mechanism. Diesel engine is also known as compression ignition engine. The heat of compression is used to burn fuel that has been injected into the combustion chamber.
Contrary to popular belief, lemon is not a hazard for an inflamed larynx. Lemon is known to help reverse voice loss. If you are suffering from a sudden loss of voice; all that you would need to do is to mix a few drops of lemon juice and honey in a glass of lukewarm water. Alternatively, one could even dissolve a few drops of lemon juice in a glass of warm water and add a pinch of salt.
Hoarseness or total loss of your voice is caused by a condition called laryngitis in which the voice box (larynx) becomes inflamed. Laryngitis has many causes, so, if you're aiming to lose your voice on purpose, you have a variety of potential options. However, proceed with caution - this is usually accompanied by significant pain and/or irritation. See Step 1 below to get started.