94 cutlass supreme smoking and stalling

Check the fuel pressure at the fuel rail.you can google your vehicle for it's fuel pressure.

Check oil first, Low oil sensor will shut down if more than a quart low. Change fuel filter, could be fuel starvation, change the air filter. stopped up air filter will put MAF sensor out of range. PERFORM OBDII SCAN SOON.

I hope you did not replace all of that trying to fix this problem.
Has anyone checked fuel pressure cold and hot yet ?

TRY CHANGING FUEL FILTER,COULD BE CLOGGED FUEL FILTER,FUEL PUMP FAILING,FUEL COULD BE CONTAMINATED WITH WATER.IF FUEL SYSTEM OKAY,CHECK FOR SPARK AT SPARK PLUGS,COULD BE FAULTY IGNITION MODULE OR FAULTY IDLE AIR CONTROL VALVE I WOULD HAVE VECHICLE CODE SCAN FIRST BEFORE SPENDING MONEY.

black smoke - oil in the cylinders

White smoke - water in the wrong area - probably a head gasket.

The head gasket is what I am hoping for because it is cheaper to do. And most instructions manuals from an autoparts store has step by step instructions.

If it is oil then you are looking at rebuilding or replacing your engine.

Take a look at both the oil and antifreeze to check for cross contamination which would verify the blown head gasket.

souhds like a blownhead gasket ,remove radiastor cap fill with water have someone crank engine over and see if water is spitting out if so thic confirms head gasket is blown

Well, you are either not getting enough gas or air. First try taking off your air cleaner and then try to start your car. If that works than just buy a new air filter. If not, try repulsing your fuel filter. Should be under the car between the gas tank and engine. It is a cheap part but serves its purpose. Also you should replace your spark plugs and wires just for regular maintenance. If that doesnt work it could be either the fuel pump or carb. if you don't know that much about those, don't try to monkey around with it. Have a friend or a shop do it. But,,,, before you pay out your *** for unnecessary shop work check out prices for a new carb or fuel pump.

Your problem is could be one or more of those things. And for the very worst scenerio, could be a blown head gasket. Check out the easy stuff first and work your way to the others

for place i would check is ur injectors and the fuel pump

It means the car is running too rich. Check the air filter. If it clean you will likely need to rebuild the carb if it hasn't been done. If it has you might just need a carb adjustment.

Might be dirty fuel filter change the fuel filter see how it runs.