I bought a 1975 fj40 3 years and have used it as a daily driver since. I recently had found a leak coming from my gas tank and when i removed the gas tank cover i noticed the single line coming from the fuel vapor serarator was routed directly back to the return on the opposite side of the fuel tank bypassing the charcoal canister that is missing. Question is, can i leave it this way when i replace my gas tank. I never smelled any gas or had a problem with the truck running.