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 rocker arms
The rocker arm bearing end caps and/or needle bearings should intact within the rocker arm assembly.
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Replace the 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 belt
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Replace the timing belt and sprockets as required.
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Worn camshaft lobes
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Replace the camshaft and valve lash adjusters.
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Stuck valves
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Replace if damaged.
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Worn or damaged pushrods
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1.
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Inspect the pushrods for excessive wear, bent condition or broken tip.
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Broken valve springs
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Inspect valve springs and replace as required.
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Excessive valve lash
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Inspect the valve lash adjusters and replace as required.
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