California CK5'ers - Vapor Lock Nozzles?

[sokoloka]

This seems like an obvious question - but how are you guys using them to fill up without spilling everywhere?

I have a 1973 K10, and everytime I've tried to fill up I end up backsplashing a decent amount of fuel back out of the bedside intake and all over myself or the ground.

I've tightened the hose clamps on both the tank and the filler neck; no dice, still splashes.

Any recommendations on a good top fill tank that fits between the frame rails? I'm about to give up on sidefill...

Thanks.

 

[K85 Octane]

huh? What is a vapor lock nozzle? hahaha

I don't have any problems with any of the vehicles I drive, or other peoples vehicles. Are you sure your vent is working on the tank? Maybe has something to do with that? Or the second hose that goes up to the filler? Mine has two going up to the door.

Dunno

 

[ktmoutfront]

Sounds like he vent is plugged. Easiest way to permanently fix that, is move out of California.

 

[sokoloka]

huh? What is a vapor lock nozzle? hahaha

I don't have any problems with any of the vehicles I drive, or other peoples vehicles. Are you sure your vent is working on the tank? Maybe has something to do with that? Or the second hose that goes up to the filler? Mine has two going up to the door.

Dunno

To clarify my original post, this is what I'm calling a vapor lock nozzle:

Now that you mention it - I haven't checked the tank venting, or the second hose to the filler. I snugged up the hose clamps on both - maybe I need to check the venting afterall.

No spillage when filled with a long neck funnel or gas can however.

 

[blaznjon]

they changed the neck size in later years.my 73 k5 has the small 1-1/4" filler neck and tank inlet.it sucks.some times it helps to hold the nozzle upside down. or find a gas station where you can pull the rubber back and it still pumps.

 

[sokoloka]

Sounds like he vent is plugged. Easiest way to permanently fix that, is move out of California.

Believe me, something I've considered many times.

What's the easiest way to check the vent? Pull the bed and hose from the filler neck to the tank?

they changed the neck size in later years.my 73 k5 has the small 1-1/4" filler neck and tank inlet.it sucks.some times it helps to hold the nozzle upside down. or find a gas station where you can pull the rubber back and it still pumps.

As much as it sucks I'm glad to hear I'm not the only one experiencing this. Tried the upside-down technique yesterday - seemed marginally better.

Anyone have a DETAILED writeup of a blazer or burb tank swap into a LWB K10?

 

[454Sub]

The gas tank itself has a 1/4in vent tube that runs to the charcoal canister. The fill nozzle has like a 5/8in that goes from I think the tank up to just below the little trapdoor thingy on the nozzle itself. See if one of them are plugged or kinked.

 

[dyeager535]

I'd verify the vent is working before I worried about anything else. I'm surprised the '73 has a charcoal cannister, but whatever its got for a vent, real simple to check....remove the gas cap, and blow through the vent line. If you build any pressure, you've got a problem.

If the vent line goes into a charcoal cannister, you are going to have to check that direction as well, although the cannister SHOULD bleed pressure. It's not intended to pressurize, it's open on the bottom.

 

[chulisohombre]

On those I used to pull the outer sleeve
Back til it would Start pumping. Pain in the butt but I got it to work without spillage. If yours is overfilling from the vent blocked you can pull off the tube from the gas tank and blow through it. There is another tube by the fuel line that runs to the charcoal canister. My 72 has one under the battery tray.

 

[TheBeast_88K5]

Sounds like he vent is plugged. Easiest way to permanently fix that, is move out of California.

Werd.

 

[owenst7]

To clarify my original post, this is what I'm calling a vapor lock nozzle:

Now that you mention it - I haven't checked the tank venting, or the second hose to the filler. I snugged up the hose clamps on both - maybe I need to check the venting afterall.

No spillage when filled with a long neck funnel or gas can however.

I hate those ****ing nozzles! I have half a mind to start removing them to fill up because they are wasting my money by spilling on the ground.

 

[onetonbb74]

on the older rigs that have the flush mount gas filler vs a fuel door rig, I put the vapor lock nozzle upside down, seems to help.

 

[LAZYMON]

I feel your pain. I have had the same issue on my 73 since they changed them I think a year or two ago now. I live on the stateline of Nevada and go there to fill up and never have an issue. I have tried pretty much every gas station in South Lake Tahoe and they all spew gas no mater how I hold the nozzle. Raleys opened a gas station near my house and this one place I can pump holding the nozzle upside down and get no leakage. I would like to put in a newer filler neck as well.

 

[76k5grrl]

Annnnd..... This is why I love this forum... I'm having this problem in a BIG way, maybe worsened by the fact that I'm short and it is VERY awkward to hold the nozzle upside down. I have to fill really slowly..

I didn't see if your vent hose was the problem or if it's just a design incompatibility problem??? If it can be fixed I want to fix it because I can't stand seeing gas on the ground :banghead:

 

[sokoloka]

Very timely bump - I'm planning on dropping the tank this weekend to replace the sending unit and was going to further investigate.

I snugged up the hose clamps I could reach as tightly as possible but to really no avail. I'm leaning towards design issue but will confirm shortly.

In the meantime, these have become my best friend:

Haven't spilled a drop yet!

 

[76k5grrl]

Subscribed... Very interested to see what you decide in the end

 

[dhcomp]

I hate those ****ing nozzles! I have half a mind to start removing them to fill up because they are wasting my money by spilling on the ground.

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.

 

[76k5grrl]

I have tried inserting it EVERY which way to avoid spillage (yeah yeah, that's what she said) with no success unless I hold the nozzle upside down and pump very slowly.

I'm pretty sure its a couple problems:

- pump operates at much faster fill rate nowadays... My truck is 36 years old and presumably has original equipment. I can't begin to imagine the diff in fill rate now vs 70s

-it may very well be something stopped up. I have tried the old suck and blow (again, that's what she said) and everything seems normal. fills fine from a gas can, but again.. Fill rate of pump too much for my old girl to take???

I would rather not drop the tank but I will if I have to... kind of wondering if more modern hardware will fit without rigging...

 

[82355]

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

I'm guessing their problem is coming from the Leaded Fuel filler neck.

Martin

 

[82355]

Well, a '76 should have an unleaded fuel filler neck. 76K5girll, do you have a leaded, or unleaded filler neck?

Martin