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After connecting the air source, we turned the unlocked regulator knob clockwise until the needle on the right-hand "Cylinder Leakage" gauge was positioned in the middle of the area marked "Set." We pushed the regulator knob down to lock it into place.
1984 Camaro Z28 Leakdown Test - Pressure Points

After connecting the air source, we turned the unlocked regulator knob clockwise until the needle on the right-hand "Cylinder Leakage" gauge was positioned in the middle of the area marked "Set." We pushed the regulator knob down to lock it into place.  View Related Article

 

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