* Coolant leak: A coolant leak can cause the engine to overheat, which can in turn cause the car to hesitate and blow white smoke. Check the coolant level and look for any leaks in the cooling system.
* Blown head gasket: A blown head gasket can also cause the engine to overheat and blow white smoke. This is a more serious problem than a coolant leak, and will require the head gasket to be replaced.
* Faulty fuel injector: A faulty fuel injector can cause the engine to run rich, which can in turn cause the car to hesitate and blow white smoke. Check the fuel injectors and replace any that are faulty.
* Faulty oxygen sensor: A faulty oxygen sensor can cause the engine to run lean, which can in turn cause the car to hesitate and blow white smoke. Check the oxygen sensor and replace it if necessary.
* Turbocharger problems: Turbocharger problems, such as a cracked turbo impeller or leaky turbo seals, can also cause the engine to blow white smoke. Check the turbocharger and replace any faulty parts.
