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.
Unlike heat, the cold cannot damage the hose
( z1 possible :polarity - :ARG1 ( z2 damage :ARG0 ( z3 cold ) :ARG1 ( z4 hose ) ) :ARG1-of ( z5 resemble :polarity - :ARG2 ( z6 heat ) ) )