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Fuel injection, Loose power when driving, black smoke from exhaust, almost stops, then runs ok!

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HOW MANY MILES?

WHAT KIND CARS?

Posted on Jul 10, 2008

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This could be as simple as the EGR (exhaust gas recycling) valve stuck open. This valve is supposed to open at a specific time, recycling the exhaust gasses back through the engine. If they stick open, the engine is not getting the correct air mixture to burn the fuel efficently, causing black smoke and lack of power. Have the garage remove and blank off this valve. If it runs ok, then a new EGR is needed.

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