Check all of the plug wires. Make sure they are all routed correctly, and on tight. If that is all good then perhaps the timing belt is off by a tooth or two.
what is the spark plugs firing order for a mercury villager 1997
In the cylinder head .
According to one of Fords websites : For the 3.0 liter V6 engine in a 1996 Mercury Villager : The spark plugs are gapped at ( .034 inch )
Screwed into the engine. Follow the spark plug wires.
Hopefully you got the timing marks lined up? What else did you add? Plugs? Were they gapped properly? Wires? Are they on tight? What exactly is "other things"?
Six, since it's a six cylinder.
A spark plug socket.
According to one of Fords websites : For the 3.0 litre V6 engine in a 1994 Mercury Villager : ( the spark plugs are gapped at .032 inch )
According to one of Fords websites : For a 1993 Mercury Villager , 3.0 liter V6 engine : ( the spark plugs are gapped at .032 inch )
I was looking at one of Fords websites and it shows for the 3.0 liter V6 engine in a 1993 Mercury Villager : The spark plugs are gapped at ( .032 inch )
OBDII plugs are under the dash to the right of the steering column.
With a spark plug socket and socket wrenches and extensions.