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Home >> Chevrolet >> 2003 >> Impala Base, 3.4 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures - 3.4L >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Notes
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Mechanical Inspection: Notes

WARNING: Because fuel injectors on many models are triggered by ignition switch during cranking mode, do not use ignition switch during compression tests. Use a remote starter to crank engine to prevent fire hazard or engine oiling system contamination.