Weifang 6105 motor engine (Weifang Diesel Engine Sales 138-6460-0749) diesel engine just starting when the white smoke, after the temperature rises into the black smoke. This shows that the cylinder pressure is insufficient, although the pressure can maintain the diesel engine starting, but the starting temperature is too low to make some of the diesel oil is not burned and volatile into steam. Check valve should be closed tight, valve timing, cylinder gasket or injector hole seal leaks, cylinder wear is too large, the rings have no delay or whether the opening registration, and then solved the company's Web site: www.wffadongji.com www.wcfadianjizu.com www.wfhccyj.com www.wfliheqi.com www.chanchewfcyj.comwww.fadianjimall.com