No, you do not have to remove the engine.
Yes , according to the Gates website ( they make timing belts etc. ) the 3.3 liter V6 engine in a 2001 Mercury Villager is an interference engine
Yes , according to the Gates website ( they make timing belts etcetera ) the 3.3 liter V6 engine in a 2001 Mercury Villager IS AN INTERFERENCE ENGINE
chain
mercury villager heater core 2001
Yes.
Timing is set by the PCM and is not adjustable. The distributor should always be reinstalled in the same position it was removed from.
I have a 1999 Villager Sport with that same engine. I am doing the timing, water pump and belts on it and found out that the 3.3L is a TIMMING BELT. CarQuest has some awsome prices on the timing kit accessory belts and water pump. I paid close to $195.00 with tax in FL for all these components. Hope this helps!
Dual chains
Yes it is exactly the same.
The 2001 Sentra has a timing chain.
There are no timing adjustments possible, timing is set by the PCM. If you remove the distributor, you should note it's position as exactly as possible and put it back as closely as you can.