hey peeps, check it out, my aunts old 91 civic 4dr lx my new car, is having problems. when she got rid of it the radiator was clogged and spitting anti freeze out, so i replaced the radiator and the hoses, then coolant flowed fine and no over heating while running in the driveway, so when i got insurance on it and some temptags 31 miles later the cars over heating again but it was fluctuating like it wanted to cool off but was doint it fast enough till eventaully it just went up and stayed untill i pulled over and let it cool dwn. so i replaced the thermostat, now the car is not over heating as far as i can tell, but now im geting this white like smoke coming from my exhaust and the engine idles at like 500 and tries to dye, actually did once or twice, mind u the car was sitting for like 6 months or more before i started wrking on it. so now im thinking the fuel system maybe is dirty so i put z-max in it that did nutting. so now i call on my auto peeps for advice cause im bout to dump this ride and i dont want to. what should i do? is it even worth tryin to revive?
p.s. im not sure how many miles it has cause the engine has been swappped before. thanks for all the helpi can get.