Problem Reports
Ford F-150
Report: EGR orfice in intake may plug with carbon
Ford F-150 Problem
Model Years Affected: 1997, 2002
Exhaust & Emissions Affected: V6
Verified
The EGR orifices in the intake manifold may plug with sludge. If the truck has high mileage, this may cause engine misfire when first accelerating because too much EGR gas is directed into the cylinders of the unplugged orifices. This makes the mixture lean, which causes a gradual stumble that increases in severity until repaired.