Fuel tank vent

[Nolowrider]

After replacing by stock mech fuel pump with a $65.00 Holley mech my problem still exist. Truck idles fine when accelerating it wants to bog down, like it is running out of gas. I noticed that my fuel filter is not full like it used to be. Being that the fuel pump is good and I don't think it is a vapor lock issue, I then turned my attention to the tanl. If I leave my gas cap open I think it runs fine, but when I lock it closed it wants to die after a few minutes. Pop the cap and is fine. So, I think my tank is not venting. My truck has never had a return line since I had it, no carbon canister. Where is the tank vent? Any suggestions on how to fix this problem? The cap has been on this truck for 20 yrs it is off a Dodge Charger (if I rememer right).


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