With today's computer controlled cars, the possibility of a vehicle not starting when you turn the key is less likely then ever before. But it does happen, and when it does, it would help if you knew some basic tests and procedures that could allow you to determine the cause and often fix the problem yourself instead of relying on your local repair shop to bail you out.
The first step is to narrow down the cause of the no-start.
Let's go over the process of starting the car, so you have a better understanding of what is going on when you turn the key:
Here is what happens on a properly running car:
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