I noticed my car has a 2 inch crack in one of the oil injector hoses for the air supply to it... would this make it not want to idle? I do not have access to ordering the spider right now.. can I just buy some vac hose and make something work so they all can hook into one? Where can I get these parts?

 

Vacuum leaks always make engines run poorly and yes, you can replace it with stock vacuum line. While you have it apart, replace everyone that you can.

 

why bother asking? vac hose, even silicone is cheap enough that if you see its cracked, replace it.