Vehicles using M112.960 engine list:

Engine M112.960

Symptoms:
- Loss of power or reduced engine performance
- Rough idling or engine misfires
- Excessive oil consumption or oil leaks
- Whining noise from the supercharger (Kompressor)
- Check Engine Light (CEL) illumination

Diagnosis:
- Inspect ignition coils and spark plugs for wear or failure, common causes of misfires
- Check for vacuum leaks around intake manifold and supercharger hoses
- Perform a compression test to assess cylinder health
- Examine supercharger belt and pulley for wear or slippage causing whining noises
- Scan for diagnostic trouble codes (DTCs) related to ignition, fuel, or boost pressure sensors
- Inspect oil seals and gaskets for leaks, especially around the supercharger and valve covers

Fixes:
- Replace faulty ignition coils and worn spark plugs to restore smooth combustion
- Repair or replace cracked or leaking vacuum hoses to eliminate rough idling
- Replace worn supercharger belt and pulleys to stop whining noises and maintain boost pressure
- Fix oil leaks by replacing gaskets and seals, particularly valve cover gaskets and supercharger oil seals
- Clean or replace the mass airflow sensor (MAF) and throttle body if dirty to improve engine response
- Address any detected DTCs with targeted repairs such as sensor replacements or fuel system cleaning

Prevention:
- Follow regular maintenance intervals for spark plug and ignition coil replacement
- Use high-quality synthetic oil and change it frequently to protect supercharger and engine internals
- Regularly inspect and replace supercharger belt and associated components before failure
- Keep intake system clean and free of leaks to maintain proper air-fuel mixture
- Monitor engine performance and address any unusual noises or warning lights promptly to avoid further damage

By adhering to these diagnostic steps and maintenance practices, owners of the SLK 32 AMG Kompressor can ensure the longevity and reliable performance of the M112.960 engine.