Filler neck trouble!

[LTZ C20]

Honestly I don't know! Just lucky I guess.

[philo_beddoe]

Regardless, i'm not giving up!! Sick of spilled gas and no way will i tolerate it with new paint.

I'll just wait for Chevy to send out a recall notice.

[TerryY]

Is the vent hose clear or full of spider webs and junk?

[LTZ C20]

Is the vent hose clear or full of spider webs and junk?

To whom are you asking?

[Gagecampbell82]

I have this problem at certain stations. But in north Alabama we have no emissions testing and A LOT of small "mom and pop" style gas stations. I like to give my money to the locally owned business but some of them will not fill my truck,  I literally have to do as if the tank is full and put a few cents at a time, but I've chalked it up to the shape of the nozzles.

It's not really annoying usually. But the people behind me hate it.haha. And my truck is pretty low so I basically bend in half to fill it. But I've heard these trucks are notorious for it. And at the end of the day I'm fine with it, I May replace the fill and vent hoses when the float stops working just to see.

[philo_beddoe]

ya know, good point, I'll check that vent hose today.

[frotosride]

Ok so I think I figured out the issue. I'm not exactly sure how the pump itself works but I know that when it gets submerged it shuts off. When the pump is at full flow the vent (at the tank) acts like a Jet Pump and picks up fuel from the gas filling the tank and if the newer pump is as sensitive as most are it will stop the flow... not sure of an easy fix as of now but I will add it to the to do list.

[philo_beddoe]

Not sure about that mr. froto, but you could be on to something. Keep me posted!!

[Greybeard]

I agree with the idea of finding the sweet spot pertaining to the angle of the filler neck and pointing the nozzle in that direction.

Isn't the clear tubing fuel rated? It's used on motorcycles all the time. It comes in large diameters at most hardware stores. Nevertheless, I don't think the issue is with the rubber tube, its the metal neck itself. I cut the siphon restriction (actually the low-lead nozzle restriction) out of mine and that helped IIRC. It allows the nozzle to swing that extra fraction of an inch to line up with the bend better. But I've only seen one pump with emissions equipment on it (and that station didn't survive long), it's good to live in a state that does not require worthless ideas to be put into action.

[philo_beddoe]

I have been finding that aiming the pump to the left side, pointing toward the rear of truck, helps. And that hsppens to be away from the vent line. 

[philo_beddoe]

Update:

During my body resto, i installed a new filler neck and hoses. Now the gas fills at full speed.  Good fit. I noticed the opening is much larger than the oem, and the vent hose is larger as well.

[JohnnieB]

Philo, what year filler neck and hose did you go with?
-Thanks!

[philo_beddoe]

Sorry to get back so late. I just picked the option for my year, '77. I was surprised at how good the quality and fit was.

[philo_beddoe]

Sorry, i thought i was being careful about mentioning "them"