Audi Q7: Starting and driving

 Exhaust Camshaft Adjustment Valve 1 - N318-, Checking

General Description The camshaft's task is to operate the valves at the right time and in the right order to control the charge cycle. Camshaft adjustment using the Exhaust Camshaft Adjustment Valve 1 - N318- varies the opening times of the valves to suit all operating conditions. This ensures i

 Ignition and Timing

Ignition A spark ignition (SI) engine requires a spark to initiate combustion in the combustion chamber. Voltage is supplied to the spark plug where the electricity will arc across a gap at a voltage as high as 100 kilovolts. The ECM determines the precise moment to fire each spark plug using ig