Valve Train Diagnosis

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Valve Mechanism or Valve Train Noise

A light tapping at one-half engine speed, or any varying frequency, can indicate a valve train problem. These tapping noises increase with engine speed. Warm up the engine before attempting to judge the valve train noise. By doing this you will bring all engi...

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Document Title: Valve Train Diagnosis

valve

mechanism

train

noise

engine

rocker

worn

valve train

worn valve

valve rocker

valve train noise

worn valve rocker