What to do if the Volkswagen Phaeton W12 misfires and shakes?

[MacAbel]

Volkswagen Phaeton W12 misfires and shakes due to: ignition system failure. Below are the details: Cause Analysis: Ignition system failure, check the spark plugs and ignition coils. Spark plugs are important components in a car engine's ignition system and are also wear parts that need regular replacement. If spark plugs are used for a long time without replacement, the electrode gap will increase, which will affect their ignition energy. If spark plugs are used for a long time without replacement, carbon deposits will also appear on the electrodes, which will also affect the spark plugs' ignition energy. Solution: For ignition system failure, first start the engine and check if the warning light is on. If it is on, use a fault decoder to read the fault code and diagnose the low-voltage circuit fault based on the fault code content; if the warning light is normal, check the high-voltage circuit of the ignition system.