How to check engine vacuum hoses<br>Check each hose for bulges and swelling. If a hose feels soft or spongy when you touch it, this can indicate damage caused by your car's oil. [substeps] A swollen hose that is cracked and hard is often caused by heat damage.
engine vacuum hoses were introduced to cars in the 1960's
( z1 introduce :ARG1 ( z2 hose :mod ( z3 vacuum ) :mod ( z4 engine ) ) :ARG2 ( z5 car ) :time ( z6 date-entity :decade 1960 ) )