(5) injection too late, the injector should be adjusted advance angle.

(6) Fuel Injector working poor or damaged, should be removed cleaning inspection.

(7) Injection Type wrong choice. Imports of high-speed engine by the fuel injector matching the strict requirements (jet aperture, a few holes, spray angle), such as improper and will have smoky engines, even if the same type of engine, the use of different occasions (output power, such as the speed at the same time), the request to use the injector models is not the same. If matching errors, should be replaced with the correct type of fuel injection.

(8), or poor-quality diesel fuel grades is wrong. Porous injector equipped with the direct injection combustion chamber of imports high-speed diesel engines, fuel injector aperture small, high precision, quality and grades of diesel have more stringent requirements, it will cause the engine smoky, and even engine can not operate normally. Therefore, we should choose clean qualified light diesel oil, the proposed use of diesel Baihao, by the summer of 0, or +10 winter use, or -20, -10, -35 cold regions of the selection.

(9) cylinder, piston components wear more serious. This situation, Piston Ring Mibianbuyan, serious in-cylinder pressure drop, resulting in diesel combustion and smoky not fully, and the engine power dropped dramatically, seriously, with the load, the engine will automatically flameout. Should replace worn parts.