The EGR cooler is a critical component of the Emission & Exhaust System, which recycles exhaust gas to boost fuel efficiency and protect your engine. You can operate with a bad EGR cooler for a short time, but over time, it will cause catastrophic damage to both your engine and other critical components. To avoid this unwelcome outcome, you should clean it regularly or replace it when it fails due to issues like thermal stress, corrosion, or blockage. Stress and corrosion cause leaks, leading to white smoke and coolant loss, while blockages restrict flow, causing overheating.
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