knock sensor replacement

[V8KOMX3]

Im changing out my knock sensor today and I have the intake manifold off but I dont see a way to get to my knock sensor. its deep in there and it almost looks like I would have to take the front head off. does anyone have any sugestions on what I should be doing here? I can't find my chiltons manual so i'm flying blind...

[V8KOMX3]

update
Well I got almost all the way done. I had one bolt to go on what appears to be a hard metal coolant line. (the back bolt) but I didnt have any tools that could break this bolt free. once I find something that can get that bolt loose I think I will be able to access the knock sensor area. Anyone have any suggestions on what kind of 12 mm tool I need to get this final bolt? my socket didnt work nor did my open end or box end wrench. Why does everything on this car have to have one piece that ends up being complicated and makes a 1 hour job turn into mulitple days

[hgallegos915]

I used a really small socket and a wrench. it did the trick but was hard.

[JWMX3]

after you get the 4 bolts off from the thermostat housing, 2 on each side (btw the lower bolt a 1/4 inch universal joint adapter makes it easy)

then the 2 coolant pipes between the heads just pull out from the front of the motor, they are just stuck in there and have o-rings on the end.

its pretty easy once you do it the first time

[Daninski]

Replace O rings (seals) with new ones.