my car is MESSED up

[FrostBite]

Man, I just replaced the BISS screw and topped off my coolant and took my car for a drive. It was smoother than ever and it felt soooo good to drive my car again. Well, when i was almost home, i was driving slow, and all at once i noticed my engine got messed up, and had NO power. I pulled over and popped the hood but couldnt see any problems. I got it home but it had no power and it sounded really really rough. Its sitting in my driveway now. It idles really badly and when i rev it, it has a lot of lag. Like if i push the pedal to the floor and let go, instead of shooting up like its supposed to, the rpm barely goes up. I have to hold the pedal and wait a while for the rpm to go up and the engine is reallly rough. I also smell excessive gas. I know its not the spark plugs (checked them already), I dont think its the wires, I looked for any lose hoses or connectors inclusing the IC pipes. No smoke is coming from the engine bay or from the exhaust. I really dont know what to do at this point, its undrivable right now, I cant even drive it slow without this bad problem, I can get it somewhere close by but thats about it. It's like when you mix up the spark plug wires, seems like only 2 or 3 cylinders are running or something. I also heard hissing noises coming from the intake manifold area. I can maybe take a video of it while i start it up if that would help diagnose it. whaaa this is making me sick

 

[skinnyt]

check the ecu and see if the caps leaked.

 

[SrKegler]

First I would fix that hissing noise you hear coming from the intake manifold. Could be injectors or a leaking manifold gasket. Either way, the car won't run right.

 

[Defiant]

How hard did you romp on it?

Check for a blown-off intake, and jumped timing belt.