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California CK5'ers - Vapor Lock Nozzles?

dhcomp said:
I've NEVER Had trouble on my burb. Sounds like we are jumping to conclusions, and blaming the nozzle for truck related issues.
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I remember my 1976 K10 being a nuisance as well. Your Suburban has a fuel door, and an angled fill neck. Their older rigs do not. Apples to oranges.

Martin
 
dhcomp said:
Id love to jump on the "hate california" bandwagon, but there isn't a need on these nozzles.

The only issues come into play when filling boats.

I've NEVER Had trouble on my burb. Sounds like we are jumping to conclusions, and blaming the nozzle for truck related issues.

Check out your vent line, as well as the rest of your filling system.

I've never spilled a drop out of my burb, unless the hose clamp on the fill hose came lose.

And, FWIW, they dont' work properly when held upside down, so i try and avoid it when possible. Yes, i flip it over to fill my boat, but on a truck, it shouldn't be necessary. I know its a dumb comment, but make CERTAIN that you insert it all the way (thats what she said) before dropping it down to engage the nozzle.
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I have the sender out of my tank about every 6 months for various reasons (I pull the tank to weld and do other stuff a lot). My plumbing is fine. The issue I have with these ****in nozzles is that the new boot pushes the damn thing off the truck. I literally have to lean in to the nozzle with both hands to compress the boot enough that the damn thing actually dumps down in to the filler neck. If I don't hold it upside down, the backflow thing immediately goes off and I can't even get any fuel out.

I have similar issues with my '96, although that one I can operate with one hand.
 
Yes. If I don't bear down on it with all my weight I can't even get any fuel out.

I'm actually glad I'm not the only one- in my head I was blaming the PO for making some error- he never warned me it would be an issue
 
owenst7 said:
I have the sender out of my tank about every 6 months for various reasons (I pull the tank to weld and do other stuff a lot). My plumbing is fine. The issue I have with these ****in nozzles is that the new boot pushes the damn thing off the truck. I literally have to lean in to the nozzle with both hands to compress the boot enough that the damn thing actually dumps down in to the filler neck. If I don't hold it upside down, the backflow thing immediately goes off and I can't even get any fuel out.
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Now that I think about it, I am pretty sure the earlier fuel setups use a reduced diameter fill hose. I ended up using one to adapt a later K5 sender to a boat fuel tank, and it is drastically necked down. Holding the nozzle upside down being a help, to me indicates its a flow problem and not a vent problem.
 
dyeager535 said:
Now that I think about it, I am pretty sure the earlier fuel setups use a reduced diameter fill hose. I ended up using one to adapt a later K5 sender to a boat fuel tank, and it is drastically necked down. Holding the nozzle upside down being a help, to me indicates its a flow problem and not a vent problem.
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But the ultimate problem is that the boot doesn't even allow you do keep the nozzle in the filler neck. You have to bear down on the thing so hard that the whole system doesn't work properly.

I'm not a real big guy, but I was a roofer for almost 20 years and I'm definitely a lot stronger than a lot of women. My girlfriend is just flat out not strong enough to put gas in my truck with these ****in nozzles.
 
It might be a CA difference on how hard it is, but when I am filling fuel cans, I just hold the "boot" back with one hand while filling.

Absolute pain for 31 gallons, but I don't see a way around it, unless maybe you can swap everything over to the later style fill setup? If I was driving a truck everyday, and having this problem, I'd certainly look to solve the problem, I can understand how annoying it would be, let alone if the GF can't put gas in it t all.
 
I guess that is where I need to head-later model setup if possible- because I'm no slouch and its a real PITA to fill it...
 
Have all the fuel fill setup differences been covered in one post?

I know some years didn't have fuel doors, but did anything else change at the same time? What year did the "small" nozzle fill necks come into use? When did the hose diameter change? Along with the hose diameter change, did the fitting on the tank for the fill hose get larger? Is the only hose diameter difference on the tank side, or is the fill neck side different too?

I've got an "earlier" fill hose, plus a later K5 tank, if measurements of any of this would help I would be happy to post them.
 
Just a guess, but I would image the small fuel filler would have started in 75. That was the first year, at least in California, to use catalytic converter. Catalytic converter would get ruin by leaded fuels.

So there would be a few years with the fender mounted filler with smaller (unleaded gas) opening.
 
That is correct. The smaller fill nozzle holes were so you couldn't put leaded fuel into a vehicle with a catalytic converter. That is why you will see a lot of older vehicles with the fill neck punched out, so people could pump the cheaper (at the time) leaded fuel into their vehicles.

Martin
 
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