Diagnostics and checks (1.8L/2.0L/1.6L Zetec-E)

Inspection and verification

1. Check the customer complaint.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual inspection table

Mechanical factors	Electrical factors
– Fuel line(s) – Vacuum line(s) – Gasket(s)/seal(s) – Fuel pressure regulator - Throttle body - Fuel manifold	- Wiring harness – Plug connector(s) – Fuel injector(s)

3. If an obvious cause for the problem you have identified or described by the client is found, eliminate it (the cause) (if possible) before proceeding with further actions.

4. If the problem is not visually obvious, check the symptom and contact WDS to diagnose the system.