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2004 Mercury Monterey Problems

Engine Misfire Due to Plugged EGR Orifice

for the Mercury Monterey

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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