BLOCK B: Engine Systems.

Question 1

If the vacuum valve portion of a 15psi [103.4kPa] radiator cap is stuck open, which of the following is most likely to happen?
a. Leakage at the radiator tanks.
b. No coolant in overflow reservoir.
c. Reduce system pressure.
d. Collapsed upper radiator hose when 
    engine is cold.

Answer 1

c. Reduce system pressure.