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Which risk does that coolant loss present to the engine?

  • A.Accumulation of liquid in a cylinder, which cannot be compressed and may bend a connecting rod on starting
  • B.Hydraulic lock and damage to the combustion chamber
  • C.None, since the coolant evaporates within the cylinder and passes out with the exhaust gases harmlessly
  • D.Only smoke

Answer: B

Liquid collecting in a cylinder overnight can bend a rod at the next start. The last option explains exactly that risk, which makes it a correct and more instructive version of the same answer. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Naming what changes and what stays the same is the reliable route through questions of this shape.

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