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Ford F-150 Heritage EGR Orifice in Intake Manifold May Plug With Sludge and Cause Misfire

 
Ford F-150 Heritage Problem
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Model Year Affected: 2004

Exhaust & Emissions Affected: V6

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On higher mileage vehicles, one or more EGR orifice in the intake manifold may plug with sludge. This can cause the engine to misfire when first accelerating because too much exhaust gas is directed into the cylinders where the orifice is not plugged. Cleaning the clogged passages should correct this concern.

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