Engine Mechanical Component Tests

1. Verify air intake hoses are installed properly.
2. Start the engine and run at idle.




3. Measure the manifold vacuum using a vacuum gauge.
- If not as specified, inspect following.
- Air suction at:
Throttle body installation point.
Intake manifold installation point
PCV valve installation point
- Fuel injector insulator
- Accelerator cable free play
- Engine compression

NOTE: Air suction can be located by engine speed change when lubricant is sprayed on the area where suction is occurring.

Specification
More than 60 kPa {450 mmHg, 18 inHg}