I have a 2000 4.0 TJ. It failed emissions due to the p0455 and p0420 codes. The o2 sensors and that code have plagued me forever. But my question is with the EVAP. I traced the line front the canister back to the fuel tank and its rotted out, so I guess that is causing it. It does smell of fuel, and I have replaced the gas cap already. The metal line for the evap just plugs into a rubber line when it nears the gas tank and up front when it goes into the canister. there's no clamps or anything either. is this EVAP system high pressure? Could I just get rubber fuel line and replace the metal rotted one? or would this not even be a cheaper fix? im not sure of what to do.
Thanks to anyone who responds.