In the 1998 Mercury Mountaineer : The 4.0 liter SOHC - V6 engine has ( 3 ) timing CHAINS The 5.0 liter V8 engine has ( 1 ) timing CHAIN
Timing chain.
1998 mercury mosket
The 3.0 litre V6 engine in a 1998 Mercury Villager has a timing BELT
chain
The 1998 Mercury Villager 3.0 liter V6 engine has a timing BELT ( according to the Gates website , they make timing belts etc. )
On a 2002 Mercury Mountaineer : The 4.6 liter V8 engine uses ( 2 timing CHAINS / 1 CHAIN to each cylinder head )
On a 1998 Mercury Mystique , 2.5 liter V6 engine : NO timing belt ( it has 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
It is under the timing cover, driven by the timing belt.
the pump is timing belt driven and is located under the timing belt cover recommend replacing the timing belt at the same time.
The 5.0 litre / 302 cubic inch V8 used in a 1999 Mercury Mountaineer has a timing CHAIN
Timing marks are on the sprockets and on the timing belt itself. No other marks are necessary.