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Diagnosing a Restricted Exhaust System in a 1990 Jeep Cherokee 4WD
This guide outlines steps to diagnose a restricted exhaust system in a 1990 Jeep Truck Cherokee 4WD. It advises checking for ignition or fuel issues, conducting a visual inspection, and using a vacuum gauge and tachometer to test vacuum pressure at idle and 2000 rpm. Low readings suggest potential blockages, warranting further investigation to locate…
