That engine doesn't use a timing belt.
It uses a timing chain
If I recall correctly. When a timing belt goes bad it just go...
The 4.6 and 5.4 litre V8 engines in a Ford Expedition have ( 2 ) timing CHAINS * 1 timing CHAIN to each cylinder head
It does not have a timing belt it has a chain
1998, 318 is fitted with a timing chain not a timing belt.
If it has the 4.6 or 5.4 it has timing chains
If it requires a timing belt it probably is but not all engines have belts. The Expedition uses a timing chain. It doesn't have to be changed as part of a schedule like a timing belt.
It has a timing belt.
Timing belt.
timing CHAIN(s)
Your 1998 Nissan has a timing belt. Every combustion engine has a timing belt. The automaker recommends you change the timing belt every 60,000 miles.
The 1993-1998 Nissan Quest has a timing belt.