:odear ur car was overheated now u should check the following things
1 sound of ur cars engine if its sound is not proper then ur gaskit might be crossed.
2 check is it runing smoothly or missing prob occure
if any of above prob occure then u have to replace head gas kit and the approximate cost is 200 for gaskit and 400-500 labour
if non of above prob occure and only blowing from back, then ur vehicl seals are leaked due to over heat, and the approximate cost is 5000,
ok