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.
If a hose is hard its from damage to the hose
Read the following paragraph and determine if the hypothesis is true:

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.

Hypothesis: If a hose is hard its from damage to the hosen
Options: 

 - yes

 - it is not possible to tell

 - no
yes
Read the following paragraph and determine if the hypothesis is true:

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.

Hypothesis: If a hose is hard its from damage to the hosen
Options: 

 - yes

 - it is not possible to tell

 - no
user
yes
assistant