Lower plastic intake manifold may come apart on Lincoln Navigator

Problem Description and Possible Solution

The lower intake manifold is plastic and may come apart completely.

Problem Data
RepairPal Verified
Average mileage: 257,500 (223,000–292,000)
Engine affected: 5.4L V8
6 model years affected: 1998, 1999, 2000, 2001, more2002, 2003
9 people reported this problem
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Blown intake gasket. Repaired with new gasket.