we’re running out of time. My brother-in-law’s 2003 Camry needs to pass emissions by the end of the month but there is things.... what do you think the issue is?

1. Replaced gas cap - codes returned
2. Cleaned/Greased filler neck - codes returned
3. Replaced charcoal canister (came with pressure sensor/vent valve) - codes returned
4. Tested vent valve under hood - valve clicks

last weekend we replaced the canister and since then the gas cap has been pulling a vacuum to the point that the gas cap is wet when removed.