1. White smoke coming from exhaust in first start in the morning till engine is warm.
2. Its making fast "trud" sound when switch on. Once my santafe was not able to start due to winter cold and may be oil got freezes as per the hyundai technician. He tried to start many times but failed and now when start the engine that sound comes which was not there before. He also told me there is some weakness of oil motor. Is that true? What could be the reason and please suggest me. Thanks