Operation CHARM
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BMW
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2005
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325Ci Coupe (E46) L6-2.5L (M54)
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Repair and Diagnosis
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Powertrain Management
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Tune-up and Engine Performance Checks
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Valve Clearance
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Adjustments
Valve Clearance: Adjustments
Self-adjusting hydraulic tappets maintain proper
valve clearance
. No mechanical adjustment is necessary or possible.