Timing chains are designed to last the life of the engine. They are normally replaced during a complete engine overhaul. Unless the chain becomes noisy no maintenance is required.
only when it begins to fail.
No , the 5.0 liter V8 engine in a 1998 Mercury Mountaineer has ( 1 ) timing CHAIN
On a 2002 Mercury Mountaineer : The 4.6 liter V8 engine uses ( 2 timing CHAINS / 1 CHAIN to each cylinder head )
Timing chain.
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
You can check on eBay.
chain
locate timing chain guides.
Need to check your idlers and tensioners. You should of replaced them at same time.
The 5.0 litre / 302 cubic inch V8 used in a 1999 Mercury Mountaineer has a timing CHAIN
There is no way to 'test' a timing belt. On your 1993, Mercury suggests it be replaced every 64K miles.
when should i change the timing belt on a mercury villager