Engine Misfire Due to Plugged EGR Orifice on 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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Average mileage: 112,093 (72,000–195,000)
4 model years affected: 2004, 2005, 2006, 2007
15 people reported this problem
5 people shared problem details
hesitates when accelerating. problem getting worse.
EGR is plug how would i go about cleaning it and what with
2004 Mercury Monterey115,000
EGR Valve replaced.
2005 Mercury Monterey129,000
When I am slowing down or stop it shutters and stalls. When I was driving it bucked and jumped a few times.
2004 Mercury Monterey102,000
same problem at accelerating, seems like its misfiring
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