1) why does my motor oil in my head smell like gas mixed in it... ( i took off my oil cap and smelled it...

2) i was driving in 2-3 gear down a street in my town at really slow rpm jus chillin and then my car all of sudden jerkked, like mis fire or sumtin... then i was driving and out of now where the the car wouldnt go even thoi i was flooring it and it was backfireing like 2step jus not as fast, like pop pop pop pop when i gave it gas...
i pulled over and gave it gass for a few seconds and then it when back to normal.. and i drove bck home... also after taht i smelled gas in my car when i got back in my car..

could it be? my fuel pump (sohc) i have a b18c1 in my 95 coupe.. or my stock injectors? or msd? thanks please let me kno asap about both problems