What has to be done when changing the plugs on a v6 2000 sonata? I thank I have to take the intake manifold off any help would be great here is a pic of it it would be great if i can get to the back 3 plugs without takin it off but I think its unavoidable

 

Here is a link to the procedure on a 01 Santa Fe with the same engine (2.7 liter Delta V6):

http://members.aol.com/dwjatwwk/santafe.html

Has a very good set of pictures set up in step-by-step order. Should help you with your task.

 

I don't own a Sonata but the 2.5L V6 in the Sonata is basically that same engine as the 2.7L V6 in the 2003-up Tib (with some minor differences to fit the different chassis. Below are 2 links on how to do iton the Tib. It should be the same for the Sonata.

This one explains how to remove both the upper and lower manifolds (you only need to do the upper half):
http://www.newtiburon.com/forums/showthread.php?t=1760

http://www.newtiburon.com/forums/showthread.php?t=70634