Horrible rough idling
No accelartion
Lost of power
Changed spark plugs
Changed coils
Changed intake manifold gaskets
It then stalled while driving on highway
Had it towed home
Any suggestions greatly appreciated
Thanks allen

Theres a small tubbed line at the back of the engine. One side is hooked up to intake manifold
The other end is kust dangling it look like a vacuum line going down around the knock sencer area.