Vehicles using M276.952 engine list:

Engine M276.952

Symptoms:
- Rough idling and misfires
- Loss of power or hesitation during acceleration
- Excessive oil consumption or oil leaks
- Check Engine Light (CEL) illumination with related fault codes
- Engine knocking or unusual noises
- Reduced fuel efficiency

Diagnosis:
- Inspect ignition coils and spark plugs for wear or damage, as misfires are common
- Perform a compression test to check for cylinder sealing issues
- Check for oil leaks around valve covers, oil cooler, and timing chain area
- Scan for diagnostic trouble codes (DTCs) related to camshaft position sensors, ignition coils, or fuel injectors
- Inspect timing chain tensioners and guides for wear or failure, which can cause rattling noises
- Verify intake manifold and PCV system integrity to rule out vacuum leaks

Fixes:
- Replace faulty ignition coils and worn spark plugs to resolve misfires and rough running
- Repair or replace leaking gaskets, especially valve cover gaskets and oil cooler seals, to stop oil leaks
- Replace timing chain tensioners and guides if worn to prevent timing issues and engine noise
- Clean or replace clogged fuel injectors to restore proper fuel delivery
- Address vacuum leaks by replacing damaged hoses or intake manifold gaskets
- Perform regular oil changes with manufacturer-recommended oil to maintain engine health

Prevention:
- Adhere to scheduled maintenance intervals, including timely spark plug and ignition coil replacement
- Use high-quality engine oil and change it regularly to prevent sludge buildup and protect timing chain components
- Monitor oil levels frequently to detect leaks early
- Avoid prolonged idling and aggressive driving to reduce engine stress
- Have the engine inspected periodically by a qualified technician to catch early signs of wear or failure

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