Originally Posted by 5-7HEAVEN
Do you vent your fuel tanks' caps? My engine needs to vent thru my gas cap.
Nice setup, though.
Very good question.
Yes, the tank has to be vented. These bottles have the kind of caps that have what is called a pour hole. It's kind of a cap inside a cap. The way it works is that if you unscrew the cap a little you can pour out of the pour hole.
There's a couple of options for venting them. So far what I'm doing is in one of the caps I drilled a 1/8" hole through the inner cap. It vents all the time.
I left the other cap untouched. It's not vented so when I switch tanks I have to also switch caps. The reason I'm running it like that is so there's no possibility of a leak in the bottle I'm not using.
Another option would be to unscrew the cap a little and let it vent through the pour hole.