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.
Other things can cause the hose to be soft and spongy
( z1 possible :ARG1 ( z2 cause :ARG0 ( z3 thing :mod ( z4 other ) ) :ARG1 ( z5 hose :ARG1-of ( z6 soft ) :ARG1-of ( z7 spongy ) ) ) )