I have two codes, 0442 and 0455, which are Evaporative system leak faults. Any tips to find the source of the leak before I spend hours looking for it?

Thanks,
John

 

I know you can take a sprak bottle of water and spray vacume lines to find a source of a leak with vacume lines (essintially find places where the water quits running). I think that the same might apply here as well. Wile your hunt mike take a few this might shorten it.