Where are the spark plugs on this e-350 1998 model.They were never changed,can they be changed by a do-it -yourself person.?They don't seem to be visible,this is a gasoline V_8.

U have to take the dog house out. Its the big box cover thats located in front of the the dash board. Depending on the year you might have to look undernieth the vehical.

They are in the top of the eng. under thier own seperate coil packs,disconnect each coil pack , remove each hold down bolt , slightly twist and pull up on coil packs and remove, squirt a little penatrating oil around the base of each s-plug, slightly tighten plug [ counter clockwise ] then loosen and remove plug.

Sorry I ment tighten plug [ CLOCKWISE ] then loosen and remove

How long does it take to change these spark plugs

What the hell is that guy talking about it sure isn't a 1998 E350 ford the plugs are accessible under the dog house but they are on the side of the motor by the exhaust and they are each separate from the 1 coil it uses i had to bend the floor of the body opening to get to 2and 5 to pull the wires and 2 plug number 5 i have to get the plug from the under fender with a swivel but numb. 1 i have no idea i cant even see it and i have been trying to get help but no one seams to know . So good luck on the plugs and hope you get help with #1 plug posted if you do ok thx