When a diesel engine is operated under a load, coolant continually comes out of the radiator overflow and there are bubbles in the radiator. Which of these is the most likely cause?

(A) Too much coolant in the cooling system

(B) A clogged radiator

(C) A stuck-open thermostat

(D) Compression leakage into the cooling system

D







A diesel engine has excessive black smoke when started in the morning. Which of these could be the cause?

(A) A bad fuel injection nozzle

(B) A restricted fuel ...
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