Lincoln MKZ water pump leaking antifreeze from small hole behind alternator on Lincoln MKZ

Submitted by Dr Hunt · Jun 23, 2025
Published by RepairPal

Problem overview

Some Lincoln MKZ owners report experiencing leaks of antifreeze from a small hole behind the alternator, which may indicate a failing water pump. This weep hole is designed to allow coolant to escape when the water pump is malfunctioning, and if left unaddressed, it can lead to significant antifreeze loss and potential engine damage. Owners have noted that such leaks are often a sign of a bad water pump that may need replacement to avoid further complications. Prompt attention to water pump issues is crucial to prevent coolant leaks, engine overheating, and the risk of engine failure. It is recommended that affected owners have their water pump inspected and repaired by a qualified mechanic to safeguard their vehicle's performance.

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