Base Engine Misfire with Abnormal Valve Train Noise
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Base Engine Misfire with Abnormal Valve Train Noise
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Cause
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Correction
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Worn or loose followers, valve rocker arms
The follower, valve rocker arm, roller bearing should be intact and in the proper position.
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Replace the followers, valve rocker arms, as required.
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Stuck valves
Carbon buildup on the valve stem can cause the valve not to close properly.
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Repair or replace as required.
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Excessively worn or mis-aligned timing chain or chains
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Replace the timing chain or chains and sprockets as required.
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Worn camshaft lobes
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Replace the camshaft or camshafts and SHLAs (valve lifters).
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Sticking SHLAs (lifters)
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Replace the SHLAs as required.
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