Understanding the appropriate procedure and diagnosis codes for a particular study question is an important part of analyzing Medicare data. These codes are very specific and can change from year to year as new codes are added and others are discontinued.
There is no wear-out factor in the coil itself other than thermal cycling and the damage it may cause. Boots and wires do age, resulting in reduced insulation value over time. The key to correct ignition system diagnosis is to understand the details of how the system you are working on really functions. PAGE:
Worn-out spark plugs can still carry on for long periods of time. The big problem is that as they slowly deteriorate the ignition and engine start to appreciably suffer. Cars donât really want to have cold starts in the wintertime, and bad spark plugs will put a serious drain on the battery.