Kia stalling not wanting to go

take the positive battery cable off wait 10 minutes and reconect if it does not work check the fuel pump fuse sometimes the fuse for fuel pump will trip to protect the car

There should be a relay for the pump, if you jumper the relay the pump should run and you could then check fuel pressure with a gauge.

I can understand you being frustrated.
There really is no way to tell if the fuel pump was the problem at this point.
If the security system fails, you should see "security" light up on the cluster.
The key lock has a sensor that reads the chip in the key. If the sensor fails or the chip fails the computer won't let the vehicle start.
Most of the time when the security system is at fault, the vehicle won't start, but it won't cause the engine to stall.
You might want to have someone check the fuel pressure and spark at the plugs if you don't see the security light on the cluster.
Could be the fuel pump relay and a list of other things.
I would probably check the computer for trouble codes too.

sorry to tell you but you have a blown headgasket or cracked cylinder head. that is why the coolant blows out of the radiator and the engine won't start due to engine compression getting into the cooling system.

It certainly sounds like a fuel delivery problem. You didn't say if you changed the in line filter. If it is partially plugged, it won't allow enough gas to reach the engine. After or before changing that, you would want a fuel pressure test, to see if the proper fuel pressure was available at the injectors for them to work. Proper fuel pressure is dependent not only on the pump, but also on the fuel pressure regulator-which would be checked when a pressure test is done.

Since it starts I would assume the problem is not in having no spark. You may want to look into testing the fuel pressure. If you have not changed the fuel filter in a while you may want to do that now.

Any service engine light? If so have that checked.

While a faulty ignition module can have an adverse affect on timing and starting, it seems to be a common thing these days for a fuel pump to go bad. Many times due to people driving bellow 1/4 tank of fuel. The pump inside the tank needs fuel to keep it cool.

Check the fuel pump and all fuel related items, and check the coil pack. Check fuse's for same.
Remember, NO air, or NO fuel, or NO spark equals NO run.

A bad ignition module can give you fits!!!! Replace it even if it doesnt fix it! You will be glad you did! Most likely that is the problem ,however!

Drop the fuel tank and replace the fuel pump. Filter is attached to the fuel pump. Sounds like the fuel pump is failing.

It is part of the fuel pump module inside the fuel tank, all the cars are starting to use this type of setup, the filter is only serviced when the fuel pump fails.