13. The upper radiator hose collapses when the engine gets cool. A defective _______ is the most likely cause. A. hose B. pressure cap C. thermostat D. hose spring

Respuesta :

Answer: B


Causes and Fixes. The most common cause for radiator hose collapse is a vacuum issue caused by a faulty radiator cap. Caps are rated around 14–16 psi. Under normal circumstances, caps should release the negative pressure caused when an engine cools down and the liquid coolant contracts.