Vehicles using M272.948 engine list:

Engine M272.948

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

Diagnosis:
- Inspect ignition coils and spark plugs for wear or damage; these engines commonly suffer from coil pack failures causing misfires.
- Check for oil leaks at the valve cover gasket and camshaft adjuster seals, as these are prone to deterioration.
- Perform a compression test to rule out internal engine wear.
- Scan for fault codes related to camshaft timing and misfires (e.g., P0300-P0306, P0011).
- Examine the variable valve timing (VVT) system, including the camshaft adjusters and associated solenoids, for proper operation.

Fixes:
- Replace faulty ignition coils and worn spark plugs to resolve misfire issues.
- Renew valve cover gaskets and camshaft adjuster seals to stop oil leaks.
- Clean or replace the camshaft adjuster solenoids if VVT faults are detected.
- Address any timing chain tensioner wear or chain stretch if timing-related faults persist.
- Use OEM parts to ensure compatibility and longevity.

Prevention:
- Follow regular maintenance schedules, including timely spark plug and ignition coil replacements.
- Use high-quality engine oil and change it at recommended intervals to protect VVT components and prevent sludge buildup.
- Periodically inspect for oil leaks and address them promptly to avoid engine damage.
- Avoid prolonged idling and aggressive driving to reduce stress on the timing chain and VVT system.
- Keep the engine clean and monitor for early signs of performance issues to enable early intervention.