Originally Posted by
Pranav
From what I gather at this point, I'm running into a combination of three issues; I have a 1/2" hose going down low out of the tank, and the final outlet of the vent sits below the the top of the tank where the vent hose starts; additionally the 1/2" hose starts off from both 5/16 and 3/8 vent fittings tee-d together, which is a no-no.
It seems like the 1/2" hose is pooling up and not allowing any fuel in fluid form to not get sucked back in when the tank cools off, and the output being down low initiates a siphon effect.
The correct way would be to ditch all that, cap the 5/16" port, run a long 3/8" hose up high and make sure the outlet is up high (like your setup).
The other solution would be to acquire and install all the stock EVAP hardware, but I was missing all of that from day 1, built the car from parts...
I would still recommend not running an electric solenoid (what's the short/arc protection internally in the solenoid?), but instead just have a simple ball valve you can flip when you store the car...