How do you change spark plugs on a 1994 plymouth grand voyager?

cant access spark plugs on the back side of the motor in my vanHow do you change spark plugs on a 1994 plymouth grand voyager?Ratchet wrench and long extension is the only way to do it. You might have to come up from under the vehicle.How do you change spark plugs on a 1994 plymouth grand voyager?use losts of compressed air to blow out the area where the spark plugs are. nothing sucks more than getting debris including sand into your combustion chamber.