Engine Noise on Start-Up, but Only Lasting a Few Seconds
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Engine Noise on Start-Up, but Only Lasting a Few Seconds
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Cause
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Correction
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Incorrect oil filter without anti-drainback feature
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Install the correct oil filter.
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Incorrect oil viscosity
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Drain the engine oil and replace with the correct viscosity oil.
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High stationary hydraulic lash adjuster (SHLA), valve lifter, leak down rate
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Replace the SHLAs, valve lifters, as required.
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Worn crankshaft thrust bearing
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1.
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Inspect the thrust bearing and crankshaft.
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2.
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Repair or replace as required.
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Damaged or faulty oil filter by-pass valve
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1.
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Inspect the oil filter by-pass valve for proper operation.
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2.
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Repair or replace as required.
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