Fuel system

Car was okay then one morning, started car and idle was rough. Quickly went back to smooth. Next morning, started car ran rough, backed out garage, smelled fuel instantly, light smoke, shut it off.
Gas was light stream to that point from garage. Checked under rear, by tire no leak by tank or evap solenoid.
Found one injector to have puddle under, others were dry and not leaking. Pulled injector, no plastic pintle. O-ring on but stretched out. Bought new injector, this one has pintle, and o-ring is above the groove it sat in on old one due to this pintle. I left it on, cleaned area, lubed it and installed. Primed the fuel pump, 5 times before engaging starter, tried to start it, cranked for a second then chunck sound. Like a locked up sort of, but it will turn again and do same thing. Solenoid?
Or misfire from few seconds of running with bad injector? Or possible fouled plugs? I do not know what to do, I usually can fix most but I am afraid of damaging. Please help.