Know the Probability of Certain Conditions Developing

- Look for the simple rather than the complex.
- For example:
- Electrical conditions usually occur at connections rather than components.
- An engine no - start is more likely to be caused by a loose wire or small adjustment rather than a sheared - off camshaft.
- Know the difference between impossible and improbable. Certain failures in a system can be improbable but still happen.
- New parts are just that, new. It does not mean they are always good functioning parts.