That vehicle with the V-6 or the V-8 doesn't have a timing belt.
It has a timing chain.
timing chain
chain
The distributor is set to zero with a scan tool. It is not done with a timing light.
The timing chain does not require replacement unless it has failed.
Yes it does, both the 4.0, and 5.2 I would change at around 75,000-90,000 miles. The timing chain should last for the life of the engine. 200k plus.
with a center not an outside puller also dont pry or hit on it for it will break
when should i change the timing belt on a mercury villager
No. Chain
The timing chain (not belt) is not a thing that you should have to replace on a mileage basis. Just keep the engine in tune, change the oil per manufacturers recommendations, and drive it. By the way, a timing belt should be changed approximately every 75K to 80K miles. Your engine will have a chain.
It could be the timing is not set correctly. Possibly one or more of the spark plug wires have been put on the wrong plug.
The timing chain does not have a recommended change interval and should last for the life of the engine.The timing chain does not have a recommended change interval and should last for the life of the engine.