Hey everyone, first time to post a question. I recently purchased a 1984 FJ60 . Over the last few months, I have inspected each emissions system, using the toyota emissions control manual. I am currently trying to figure out the Evaporative Emission control system. I ran all the tests in the emission manual and found that my "to tank port" on the charcoal canister is pluged. All other components for the EVAP seem to be OK. Is this a problem? I disconnected the charcoal canister, blocked off all vacuum lines and ran the truck in this condition for a few days. This seemed to make the truck hard to start. I put the system back on, and the truck was back to starting as normal.  oes any one know if the EVAP system serves a purpose other than filtering fumes from the tank and float chamber? Could a pluged cansiter cause poor gas mileage or a bump in engine idle. Is there a proper way to remove it? thanks.