Checking For Air Leakage

Checking For Air Leakage












- Start the engine and run it at idling speed.
- Restrict the air flow by clamping the air hose with a pair of pliers.
- Do not clamp so hard that the engine stops.
- Engine idling speed should drop drastically.

Is the function correct?

NO - Determining the Cause of A Fault

YES - Checking the Operation of the Idle Speed Control