Why is sealant on emission hose or vacuum line permitted?
Why is sealant on emission hose or vacuum line permitted? Using sealant to repair a vacuum line, when the vacuum line pertains to the vehicle's emissions system, will cause the smog technician to mark the particular emissions system to which the vacuum line or hose belongs as tampered and/or defective. Why am I not allowed to repair a vacuum line? Where does the vacuum line go in a car? Connect a chunk of vacuum line to any port and blow into it. Move the line until you find the port you cannot blow through. This is the port that goes...