LUVTruck.com

Someone on here was telling me that I had a faulty vapor recovery valve and while I'm not completely sure what that is or how to fix it I was reading up on the charcoal cannister and was wondering if I could retro fit it onto mine? I want to be able to use a non-vented gas cap and eliminate any need for a vented one. I also have a weber carb an offy intake and exhaust headers. When I had a non-vented cap on mine it was pressurizing the tank and putting gas into my oil and shoving it out my rear main seal. I just want to make sure everything is working as efficiently as possible. Thanks in advance guys!