Tacoma codes P0441, P0442, P0446

my tacoma is running these codes currently which is depleting my MPG. Any advice to fix these problems before I go to the shop and get charged up the wazoo? My gas cap is new but I'm not sure about my purge valve or charcoal canister. Any help is appreciated

 

Start with vacuum hose check.
Spray brake cleaner on hoses with engine running. If RPM increase you found a leak. Replace vac lines with Thick wall Silicone kit. $90. Denso Purge Selnoid. Smoke test the EVAP.
Worst case the top of fuel tank is corroded.

 

Is the gas cap after market or from Toyota? I had those codes pop up after buying mine and noticed the one on it was aftermarket so I bought from the dealer ship and cleared it. I recently changed all the vacuum lines with the thick walled silicone kit and tested the vsv also.

 

Is this what you guys mean by thick walled silicone kit?

https://www.lceperformance.com/Silicone-Vacuum-Hose-Kit-Red-3VZ-p/1072460.htm

 

Right hose and vendor.
Wrong engine, kit is for 2.7L
Find one for 4L if that's your engine.

 

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