Yeah, I just tested the new cap that I got and I can suck air through it from the inside, but it will not vent out the other way...so hot days will cause a pressure build up in the tank. I expect that this could be bad for the fuel pump diaphragm and possibly forcing fuel beyond the carb float needle, and creating leaks/smells? Anyway, are you drilling a hole in the valve inside the cap, or actually in the cap itself?
Another full system question:
I am going to make my own 5/16 hard lines going from the flex line at the tank to the fuel pump- I usually have a flexible line at the pump end as well for engine movement, but the truck didn't have one when I got it- the hard line went straight to the pump. Is this the way the truck fuel line is supposed to be plumbed?
Thanks for the tips guys.
Last edited by Norcal Dave; 07/18/2017 11:37 AM.
