 a mechanic because if somebody comes into you and says chris i need my car worked on i think it's vapor lock well if you know what vapor lock is you can say we'll take a look at your car see what it is but it's probably not that because this is a modern car with pressurized system and it shouldn't have that occur but if you don't know what vapor lock is you might be going oh i gotta look this up right figure out what oh yeah it could be we'll check that out no don't do that