i have a 92 lumina 3.1 6 cyl......i have they same stalling that every one else has but i dont know how to reach the rear spark plugs to test to see if they work also the oxygen senor is back there.....i cant even fit my hand back there do i have to take off the intake manifold or is there some other way....plz help

i have a 92 lumina 3.1 6 cyl......i have they same stalling that every one else has but i dont know how to reach the rear spark plugs to test to see if they work also the oxygen senor is back there.....i cant even fit my hand back there do i have to take off the intake manifold or is there some other way....plz help

Refer to the post titled "Roll the engine, C'mon" Dated 1/2/05

Luckily you have the 3.1 which will roll forward, I have the 3.4 which does not