I have a 02 jeep grand Cherokee that i just got about 2 weeks ago an the check engine light keeps coming on so i fix the one of the issues on it an reset it. Now its coming up large evap leak detected! How do i find it?

 

With a smoke machine hooked to the evap test port.

 

Thought about buying one of those just incase I get an EVAP leak someday. everyone should have one right? lol


If she comes back after that answer there are a couple things she could check, Gas cap seal good? rubber connector hose to the tank underneath, the hose connectors on the EVAP unit up front...to start with.

 

Some of the hoses used for the evap system tend to rot pretty bad. Visually check all of the hoses and replace any that look sketchy.