1440 small evap leak on 1999 Nissan Sentra

service engine soon light came on. took for reading code said small evap leak 1440. how do i repair?

Asked by for the 1999 Nissan Sentra
Check the evaporative system for a small leak. This is best done with a smoke machine that fills the evap system with smoke, then look for the leak. These leaks can be very small so this is the easiest way. Also make sure the gas cap is sealing properly.
Call around to some of these shops if you need help:
1 more answer
check the rear evap lines to the canister. the metal lines rust and in return crack the hoses. some what easy fix.