95 cavalier was running great stop at store for about 20 min's , tried to start car but no start, cranks over ok but will not start. Now not sure if this is related but believe it is about a month ago I start smelling gas fumes specially when running heater. Doe's anybody have a idea what the problem could be

Do you have spark? The smell could be from a bad pressure regulator.

Yes I do have spark

You will need to follow the fuel flow to see where it stops. You may need a fuel pump, or filter. If these are fine you may need a oil sending unit. If this unit goes bad the ignition module will sut off the fuel injectors. Good Luck.

Ok thanks for the replys,But here is where I stand now.Had it Towed home went out two days later car started right up,so to be safe I changed Fual filter, air filter put fual injector cleaner and dry gas in tank drove car for over a week and a half no problems,started this morning drove 1 mile to store came out try to start same thing won't start.
I do have a question if I turn key on should I always hear Fuel pump kick on ? because right now I done.

thanks for any replies
Dave

sorry for all the mis spells (Fual, should have been Fuel) and (Done should have been Don't)

yeah,when you turn the key to the on position the pump should run for like 2-seconds. sounds like maybe fuel pump relay is going bad,check that 1st,if thats it its a pretty cheap fix..

Hey there I had the same problem with my sunfire.. go out and again 20 mins later it would start. It was a problem in the ignition. I got the ignition replaced and it was expensive. over 500$.