When you drive with a faulty EGR, you increase the probability of damaging your car’s engine. EGR valve uses exhaust gas to cool the combustion chamber which makes it cooler because it does not consume much oxygen. When your EGR valve is faulty, the emission will increase which might cause overheating.

What happens when EGR is blocked?

When the EGR passageway becomes blocked off it keeps exhaust emissions and air from circulating in the engine, causing a suffocating condition. The engine idle will be rough, frequently stumbling and unable to hold a steady idle rpm. The rpm may be sporadic, raising and lowering randomly.

Can a bad EGR valve cause gas smell?

Symptoms of a bad EGR valve include: rough idling or stalling. a smell of fuel. increased fuel consumption.

Will a bad EGR valve cause white smoke?

White Smoke - while that pesky Valve can cause an abundance of black smoke billowing from the pipes, a failing EGR Cooler actually emits white smoke, or steam, caused by evaporating coolant inside the cooler. When you see white smoke, call for help.

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