92 Stealth Fuel problem

92 Sohc hard to start. Use to be more random now everyday it doesn't want to start after sitting over night. It seems the fuel is going back down the lines when it sits. The pump does come on in the start position. Have to keep cranking it over multiple time to get to start after it starts to will start right back up as long as it doesn't sit. Gas tank, sending unit, pump, and filter were change 2 mouths ago. Blew the line out the other day got nothing but gas.

check your spark plugs and tell us what you see, sounds like maybe a weak spark.