Camshaft Control Badly Adjusted

The camshaft control has changed. No chattering noises occur. The DME control unit indicates misfiring for the entire cylinder bank 1 or 2. The mixture adaptation values in the idle speed range differ in bank 1 and bank 2, the mixture adaptation values in the upper and lower load ranges are generally normal.

Remedy

Carry out raw emission measurement:

• Reset mixture adaptation values (disconnect battery).
• Disconnect oxygen sensors.

If the difference between bank 1 and bank 2 is greater than approx. 0.8%, then:

1. Reset camshaft control.
2. Road test vehicle. The mixture adaptation values must be normal.