2006 VW Jetta 2.5 Please Help
 

So bought car for my sons 1st car.
2006 VW Jetta 2.5 L

Had a a lot of problems when I bought it. I ended up replacing:

-New valve cover gasket
-5 new Bosch spark plugs
-New coils
-New A/C Compresssor

Aftet I replaced all those parts I drove it around for about 5 minutes and gave it a little gas to take off and I could almost feel something give out. Not sure what. Then check engine light came on and said 4 out of the 5 were misfiring. When I start it, it’ll start and run for 2 seconds and shut off. If I give it gas it might stay on but will probably die. Almost feels like on a carburetor and it not getting enough fuel (I know this is not that but it’s what it feels like). So I ended up replacing fuel pump and same issues. Continuous misfire on 4 out of 5. I’m not a mechanic but did work myself. Parts from rock auto. Cheap prices. Please Help!