Very easy. Remove the engine appearance cover on the front of the engine (Should say Duratec V6 or something similar), 3 bolts hold it in. Next, remove the silver box underneath (IMRC)by removing 3 bolts, gently set aside. This will give you access to the front 3 plugs. The rears can be accessed as they are with a long extension bar. For added room on the rear 3 plugs, remove the coil pack by taking out the 4 mounting bolts...just remember to put the grounding strap and noise filter back on when putting the mounting bolts back in.
you don't, you buy a chevy.
the plugs on the back are very difficult. How is this done.
when do you change spark plugs
I don't know why you couldn't change them, no matter where you are.
It can be complicacated since on some models the spark plugs are difficult to get to but I would recommend to find the spark plugs first and then double check to make sure you know where they are.
Change air filter and clean or replace spark plugs
No. However, newer plug wires can be extremely difficult to remove without damaging them.
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
yes. The frontal plugs are easy, but the rear plugs require you to get your hand up in the engine from underneath.
On a 1995 Ford Contour : According to one of Ford's websites : The spark plugs on the 2.0 liter four cylinder are gapped at ( .050 inch ) For the 2.5 liter V6 ( .054 inch spark plug gap )
How to change the spark plugs
how to change spark plugs on a 2001 expedition