ASE Diesel Engines test T2 practice test 1 Questions and Answers with complete solution

Which of the following should be done after installing a new copper injector sleeve? A. Heat it B. Dress it C. Ream the seat D. Coat it with a looking compound C. Ream the seat (This reaming ensures there will be a good clean area for the injector to seal against) A diesel engine has oil in the radiator. Which of the following would be the cause? A. Cracked piston cooling nozzle B. Cracked oil cooler C. Restricted turbocharger drain line D. Restricted exhaust gas recirculation (EGR) cooler B. Cracked oil cooler ( A cracked oil cooler will allow the oil into the cooling system; thus, oil would get in the radiator.) A diesel engine has bubbles flowing in the clear bowl on the fuel/water separator. Technician A says this is caused by a restricted fuel return line. Technician B says this is caused by leaks on the return side of the fuel system. Who is correct?