Vehicles using M272.972 engine list:

Engine M272.972

Symptoms:
- Rough idling and misfires
- Loss of power or hesitation during acceleration
- Engine warning light (Check Engine Light) illumination
- Oil leaks around the valve cover and camshaft area
- Unusual engine noises such as ticking or knocking

Diagnosis:
- Inspect for faulty ignition coils and spark plugs, common causes of misfires
- Check for oil leaks from valve cover gaskets and camshaft seals
- Perform a compression test to rule out internal engine damage
- Scan the engine control unit (ECU) for stored fault codes related to ignition, fuel system, or camshaft timing
- Examine the variable valve timing (VVT) system, including the camshaft adjusters and solenoids, for proper operation

Fixes:
- Replace worn or faulty ignition coils and spark plugs to resolve misfires and rough running
- Replace valve cover gaskets and camshaft seals to stop oil leaks
- Clean or replace VVT solenoids and repair camshaft adjusters if timing issues are detected
- Use OEM quality parts to ensure reliability and proper fitment
- Regular oil changes with the correct specification oil to maintain VVT system health and prevent sludge buildup

Prevention:
- Adhere to recommended maintenance intervals, especially oil and filter changes, to protect the VVT system and engine components
- Use high-quality engine oil meeting Mercedes-Benz specifications to ensure proper lubrication and prevent sludge formation
- Periodically inspect ignition components and replace them proactively before failure
- Monitor for early signs of oil leaks and address them promptly to avoid engine damage
- Keep the engine bay clean to help spot leaks and component wear early

By following these diagnostic steps and maintenance practices, owners of Mercedes Benz E 350 4MATIC models with the M272.972 engine can minimize common issues and maintain reliable engine performance.