Ford Expedition coolant smell and leak suspected from intake manifold on Ford Expedition

Some Ford Expedition owners report experiencing coolant smells and suspected leaks from the intake manifold, which may be attributed to several common issues. These include coolant leaks caused by loose hose connections, broken radiators, or failed water pumps. Additionally, some owners find that the upper intake manifold could be a source of leakage, particularly if there is wet residue around the passenger side of the aluminum crossover. It is advisable to inspect the intake manifold and the coolant pipe beneath it, as O-rings sealing the coolant pipe to the water pump housing may fail, necessitating the removal of the intake manifold for thorough inspection. Furthermore, some owners have noted that aftermarket intake manifolds, particularly those manufactured in China, can be prone to leaking, leading to recommendations for replacement with OEM parts from a Ford dealer for improved quality and performance. Addressing these issues promptly is crucial to effectively resolve coolant leak concerns.