I just bought a 94 chevy blazer S-10 type V6 vortec engine and it isn't running worth a lick. It had been sittin at this old couples house for 4 months! Well the specifics are this I got no power you press the gas and it acts like you woke it up and it is still tired or something. the exhaust smells like gas raw gas. I changed the plugs, plug wires distributor cap and rotor, water pump, map sensor, ingnition module and the thermostat. I am kinda mad cause i can't find anyone who knows what it could be(esspecially me!) my buddy said you arent using all cylinders and i changed all that stuff to try to get it right please help if you can

 

It sounds as if the fuel system is dumping too much fuel. Try tapping on the fuel pressure regulator with a wrench. It could be stuck from sitting all that time. Also the temperature sensor for the computer could be bad. It might not be recognizing engine temp. after it warms up and still thinks it is cold and is dumping more fuel during "warm up" mode. That sensor is on the intake on the right side. Good luck.