| | GENERAL ENGINE DIAGNOSTICS Section IV Page 29 August ... 2004 Engine Noise Diagnosis cont. Noise Symptom ... Description Check or Test Tick GM C/K vehicles On cold ... start at low temperatures during engine deceleration after idle flare. Not ... 99-06-04-014 for details. Knock, engine cold. Continues for 2 to 3 minutes. ... belts; perform visual inspection. Check with bore gauge and T-gauge micrometer ... visual inspection. Heavy knock, engine hot, torque applied. Broken harmonic ... Visual inspection. Visual inspection. Light knock, engine hot, under light load ... . Excessive rod bearing clearance. Check engine codes and ignition timing ... settings; reset to specifications; check EGR for blockage. Owner input; use ... knock. Hydraulic lifter bleed down. Check filter with anti-drainback valve. ...
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