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.
Oil is more likely to damage the hose than heat
( z1 have-degree :ARG1 ( z2 damage :ARG0 ( z3 oil ) :ARG1 ( z4 hose ) ) :ARG2 ( z5 likely :ARG1 z2 ) :ARG3 ( z6 more ) :ARG4 ( z7 heat ) )