Operation CHARM: Car repair manuals for everyone.

Engine Mechanical Component Tests




1. Verify air intake hoses are installed properly.
2. Start the engine and run it at idle.
3. Measure the intake manifold vacuum using a vacuum gauge.
- If not as specified, inspect the following:
- Air suction at throttle body, intake manifold and PCV valve installation points
- Fuel injector insulator
- Accelerator cable free play
- Engine compression

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

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