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[Clayton85]

I have a 2016 ram 1500 sport and my check engine light is on replaced the purge canister valve, fuel pressure sensor, and the fuel vapor tank sensor as well and still no luck any suggestions

 

[Burla]

new gas cap?

maybe take painters plastic decent mil size and cover filler tube before trying gas cap. See if you can get vacuum back. Or leak can be in breather tube, dunno.