What is most likely cause of a persistent slow evap leak problem.

So far I have replaced gas cap with Dodge OEM after trying a cheapo.

Leak pump, EGR valve, canister, solenoid or hoses?

Do I need preformed hoses or does "off the reel" work? What size?

04 Ram 1500 Hemi with cab and 8 ft bed- the long one...

 

I had one and it was just a broken hose clamp. One of those cheap plastic ones they use. Put on a new metal one, problem solved. Check all the hoses on it too.

 

Mine had a split right near the fitting of the canister, I just cut out 3/4" and was good to go.

 

Mine had a vacumn hose split right on top of the canister as well. Really tough to see but there is a pretty good bend on that hose. Would not have seen mine but I happened to move it and it revealed the crack.