I was blowing coolant through the exhaust and i thought it might be the turbo (figured i would change it and hope for the best) it fixed the problem for a short while. However i was driving it today and the coolant light came on ( birdhouse looking one lol) and i noticed some white smoke coming out the exhaust again it only happens when it at normal temp and it idles for a three or four minutes then i hit the gas and white smoke comes out i drive it for a bit and it clears up. Starting stages bhg?? help!!