I don't have an answer but a question . My car (hyundai accent 2015) stalled on me as well , with excessive fuel smell from exhaust. I bought a scanner and tried to diagnose it , it read p0302 , p0304 and p0300 with p0420. I thought it was spark plug so I replaced all 4 , tried to start it up and it cranks for about 8 sec before it starts. Long cranks. Replaced coil packs to see an try to isolate the problem but misfires was still on cyl 2 an 4 . Looked inside cyl 4 an it was wet with fuel , spark plug as well on cyl 4. Can yall help with some advice ? Thank you.