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.
EGR orfice in intake may plug with carbonon Ford F-250
Average mileage : (–)
1 Year Affected: 1998
1 person reported this problem
0 people shared problem details
drained tanks added 10 gal fuel and can of seafoam. tuning up this weekend when paid. doesnt li...
There is a technical service bulletin for the V8 engines regarding a possible problem with the...
I changed all O2 sensors, and EGR valve about 9 months ago before finding a vacuum leak. CAT is...