Gas Tank Venting Issues - Have to fill very slowly

[MTF]

I've also seen where members tried to fill their tanks with a gas can without using the filler neck adaptor and then had this problem.
In one or two cases they needed a new filler tube. If I can find the posts, I'll post it.

 

[killswitch engage]

Ok so the vent ties into the solenoid line (which is open key off) are you checking the vent line with one of these to hold the flap open?


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I checked the vent line on the filler tube with and without the funnel. I pulled it completely out of the truck to do it since it's pretty tight working space. It was clear.

I was able to fill at a normal rate this weekend. It seems like the green vent might have been sticking and the check valve in the tank at the fill tube was sticking. Either that or I blew some dirt out of a line and don't know it. I used some wire to clean the green vent valve and tapped it with rubber mallet. The check valve in the tank I just pushed on a few times and cleaned it well.

Seems to be working...for now.

Thanks for all help! It got me checking more things and with different lines connected to narrow it down.