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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 1.8L (Lay)) >> Diagnostic Information and Procedures >> Base Engine Misfire with Abnormal Valve Train Noise

Base Engine Misfire with Abnormal Valve Train Noise

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Cause Correction
Stuck valves
Carbon buildup on the valve stem can cause the valve not to close properly.
Repair or replace as required.
Excessively worn or mis-aligned timing chain Replace the timing chain and sprockets as required.
Worn camshaft lobes Replace the camshaft and valve lifters.
Sticking or worn lifters Replace as required.