Posted on 10/16/2023
Our Repair of the Month for October features a 2017 Jeep Wrangler 3.6L V6 with 85,000 miles the customer reported the vehicle was smoking and overheating, but there was no sign of coolant leakage, even though the coolant level was low. In light of this information, we conducted a chemical test to determine if there was an internal coolant leakage in the engine. The test confirmed the presence of exhaust gas in the coolant, which is typically an indication of a bad head gasket or a crack in one or both of the heads (top half of the motor). When the head gasket is damaged, exhaust gas leaks into the coolant system, and the coolant leaks into the motor, where it mixes with engine oil. We confirmed that the head gasket was defective and removed the motor and removed the heads. We advised the customer to replace the heads with new, fully loaded ones, to avoid future problems as other components such as camshafts, timing components, and lifters could also fail. A ... read more