Visual Inspection

The importance of the visual inspection cannot be overstressed. Visual inspection can lead to correcting a problem without further testing and can save valuable time. The check should include:
- Use of aftermarket equipment (e.g., alarm systems, cellular phones, lighting, CB radio, etc.).
- Use of aftermarket parts (e.g., air filter, PCV valve, spark plugs, fuel filter, battery, etc.).
- Inspect wiring harnesses for proper routing, connections, pinches, chaffing and cuts.
- Inspect PCM and oxygen sensor grounds for tightness and evidence of corrosion.