A ticking noise may develop from the engine due to a warped exhaust manifold. Damaged exhaust manifolds will require replacement to correct this issue.Google+
Car Problem Reports
Ford F-250 Exhaust Manifolds Can Crack and Cause Leak
Ford F-250 Problem
Exhaust & Emissions Affected: 7.5L V8
Average Mileage: 129,412 mi (84,000 mi - 156,476 mi)
Visitor, 1995 Ford F-250, 130,000 mi
Experienced exhaust noise and odor. Mechanic found a cracked manifold and broken bolts plus other defects which involved r/r of 2 other parts (pipes/tubes?) to engine.
Visitor, 1995 Ford F-250
Same issue. Ticks slightly due to bad exhaust manifold.
Visitor, 1996 Ford F-250, 150,000 mi
Warped manifold due to broken axhaust m,anifold bolts. Replaced with thorley headers, around $1200
Visitor, 1993 Ford F-250, 119,000 mi
On my 7.3 diesel
Visitor, 1996 Ford F-250, 156,476 mi
loud and annoying clicking from the engine manifold they need to put out a recall on this