spark plugs

is not easy but you can do it. you have to remove all the bolt that hold the intake manifold and all the lines on top of the engine. once is remove you can slide some of the parts that blocking the spark plugs. then you can remove one by one. be careful not to loose the bolt over 50 bolts in it and they all have different size. it took me 1 1/2 days to do it and i am a good mechanic. always photo it every time you remove a parts like throttle box or fuel line or egr line, vacuume lines and etc so you have idea to put it back. photo left and rt and front and back of the eng side. my mistake i did not took a picture when i was removing this parts. it cost over $1000 just to replace the spark plug and on top of that mech shop will charge you more on some thing else due to worn or loose, missing parts before they touch it,,etc