Checking System

Checking System







HINT: If the fuel adaptations indicate too lean fuel/air mixture (adaptation value above 1.0) at idle, this indicates an air leak. To find the problem, proceed as follows:

- Check the inlet system and exhaust system for leaks.
- Engine running.
- Check fuel pressure to see if it is low.
- Ignition on
- Check residual pressure for too low residual pressure.

Remedy as necessary.

HINT: Normal fuel pressure at idle and warm engine shall be approx. 480 kPa. The residual pressure when the engine is off and the ignition is on shall be approx. 100 kPa lower than during idle.

Other Information
- Air leaks in the intake system, checking
- Checking for air leakage in the exhaust system

Continue: Refer to Checking Mass Air Flow Sensor. Checking Mass Air Flow Sensor