About 4 weeks ago my battery ended up completely dying on me because of me. Anyways when i boosted and recharged it, it started to run pretty rich and it was cutting out and dying in idle. After this happened i left it sitting for about 2 weeks. Took it out and now white smoke is coming out of the exhaust in low gears and also when it about to die it revs itself but as this happens white smoke comes out like crazy.

 

White smoke is antifreeze getting burned in the cylinders. This would be a bad thing - usually a sign of a blown head gasket (or worse).

is the check engine light on at all? is the coolant level low? is there oil in the antifreeze? does the engine oil look foamy and milky?