need help.. out of ideas 92 gmc running like crap

[rockyrivermark]

I just finished the body work and new paint on my 1992 gmc this past week and got to enjoy it for a week before it starting to run rough.. mostly on idle.. This truck as always been reliable and ran great until a few days ago.
305 with throddle body, 145,000 miles

coincidence??
1. degreased engine and hosed down engine day before problems started
2. just filled up the gas before problem started, bad gas? how to check?

what I've done:
I thought maybe I got water in cap or something so I've done the following.
1. new cap, rotor, wires, plugs, ignition coil, and fuel pump.
2. there is gas spraying out of both throdle bodies.

I did smell gas off and on while driving it.
any ideas??? help me get her back on the road.
thanks, Mark