Just below exhaust manifolds. Unless you have a diesel engine. In which case those crazy Ford people forgot to put any spark plugs in any of their diesels. If it is a 4.6 , 5.4 or V10 they are next to intake manifold under coil on plug .
Check the Vehicle Emissions Control Information ( VECI ) decal located in the front of the engine compartment ( it will show what type of spark plugs to use and the spark plug gap )
Three easy things to check: Tire pressure, spark plugs, air filter.
Yes, the rims off a 2002 Ford F350 will indeed fir on a 1999 Ford F350.
According to one of Fords websites : For a 1978 Ford F-350 : All sizes of gasoline V8 engines have the spark plugs gapped at : ( .044 inch )
According to one of Fords websites : A 1988 Ford F-350 , 7.5 liter / 460 cubic inch V8 engine has the spark plugs gapped at : ( .044 inch )
under the valve covers
According to one of Fords websites : For a 1967 Ford F-350 , 5.8 litre / 352 cubic inch V8 engine : ( the spark plugs are gapped at .035 inch )
no changed in 2003
top of the engine next to the fuel filter housing,it looks like a startes solinoid
under the valve covers
mounted to the firewall behind the radio
there are 8