How do I change the spark plugs in a 1994 e350 motorhome? I know the ones closer to the front of the vehicle should be pretty east to get to but what about the ones further back? and tips on how to do it?

 

You're gonna love this !
There are two clips and two bolts on the floor and you can remove the doghouse cover over the engine inside the van. Just remove all the stuff in the recess pockets of the cover because it will all dump out when you tilt the cover to remove it out the passenger side. Have a nice time, since you can access a lot of stuff from the passenger compartment now.