lenafort47

Hi Guys, I am new to this. I have recently been having endless problems with my galaxy. The latest being that on start up, and not every morning the car sends out quite a big billow of white smoke - this morning it actually was so much that that the whole car was engulfed in it. I took it to a garage close by ( as the car is also showing that it is overheating between 90 and 120 - even though coolant level is fine - seems to be sensor) and the mechanic said it is fuel and could be the fuel injector. Any ideas please?