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Old 08-23-2016, 05:23 PM   #183
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Greg, I added some identifiers to the photos above. Based on the pictures what I see is the following:

1 = C = Engine pump return line (most likely 5/16")

2 = D = Emissions / vent

3 = A = Engine pump suction feed tap

4 = B = Generator feed tap

Technically you could get gas from the tank using 1, 3 or 4. If you were connected to 1 which should be the engine pump return line you wouldn't get more than 30 or 40 miles before it was above the gas level in the tank.

That leaves 3 or 4. There's not a huge difference between 3 and 4 but depending on the size of the tank it could be 15 gallons or so. I'm guessing your tank is probably around a 50 gallon tank. It wouldn't surprise me to much if the lower pickup tube doesn't reach quite to the bottom of the tank so there will probably be 3 to 5 gallons of gas left in the tank when the strainer is above the fuel level.

So your tank has roughly 45 gallons of fuel available if totally full. 45 gallons minus 26 gallons = 19 gallons. That's kinda close to where it appears the generator tap is located. These are all rough estimates so it's hard to say for certain but if it only took 26 gallons to fill it seems that being connected to the generator tap is a possible cause.

I can't think of any other scenario that explains why your tank would only take 26 gallons other than your filler neck is not venting properly and you had air in the tank. Martin has been experiencing something similar with his Argosy in that his tank doesn't vent well when filling so he was having trouble filling it all the way. When filling your tank do you have to baby the nozzle to keep it pumping and does it shut off frequently?

Is there any way at all for you to trace what lines went to which pipes on the sending unit?
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Old 08-23-2016, 05:31 PM   #184
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Brad,
When I zoomed in on the view of the inside works I believe 3 is D and 2 is A. The hose closest to the center in the top view corresponds to a very short extension down from the flange with a small hole. If that makes sense. It is a little hard to make out in the picture and I could be wrong, but I do remember the evap line should have a restriction of about .030" to .050" and I would think it would be the highest line.
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Old 08-23-2016, 07:26 PM   #185
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mehes, I think you're right about 2 and 3.

1 = C = Engine pump return line (most likely 5/16")

2 = A = engine pump suction line to carburetor (3/8"

3 = D = Emissions / vent (1/2")

4 = B = Generator feed tap (1/4" or 5/16")

Unfortunately for Greg to run out of fuel at 26 gallons means he either has a tank fill problem or he has fuel line connection problem. I would think Greg might be able to tell which line is going to his engine pump based on where they come off of the top of the tank. That is assuming he can see where the hoses come off the top of the tank!

I will say this is a rather interesting problem
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Old 08-24-2016, 05:47 PM   #186
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If by some chance #2 and #3 are both 3/8" and I have them switched that could explain some things. ??
The gauge never does say full. About 7/8 is the most I have seen shown on the gauge. I have not tried to 'nurse' the filling station nozzle to see how much more I can force into the tank without fuel backing up in the filler hose. When the pump kicks off, I assume it is full. I fill my car at the same station and it works fine with the car.
I cannot drive it into the barn with any air in the air bags or the AC will not clear the door header. As soon as the weather cooperates I want to pull it out and get under it to see if I can tell what's going on.
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Old 08-24-2016, 08:57 PM   #187
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Greg, if 2 and 3 were swapped you would be able to start the engine. 3 is just a little perforated ball on the bottom side of the round plate that allows the tank to breath. Also I'm fairly certain the vent is a 1/2" pipe.

I'm beinning to think your tank is not getting completely full when you're at the gas station. Next time you get a chance to fill the tank filll it until the pump shuts off then wait a minute or two and try again. You might be getting an air bubble in the tank that is keeping the tank from filling all the way. Until the air bubble shrinks no more gas can fliw Iinto the tank.

Do you know if your filler neck has a vent pipe from the tank to the top of the neck? The Argosies didn't have the vent pipe and were notoriously hard to fill all the way. You can ask Martin about that problem!

On my 310 the tank would read full forever and then as it was emptied it would reach a point where it would seem to get towards empty pretty quick and it had the filler vent hose and was easy to fill.

Brad
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Old 08-29-2016, 08:27 PM   #188
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Crawled up under there to look at the fuel tank but, you can't see a thing on top of the tank. May have to lower the tank to tell what is going on. That will have to wait for now.
Fabricated a bracket to mount the new 40" 12volt TV.
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Mounted some speakers underneath the chassis. They are designed for use on boats, supposed to be waterproof . Time will tell.
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Old 08-29-2016, 08:47 PM   #189
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Greg, I like your TV mounting arrangement and the speaker setup looks good. What impresses me the most though is how clean the underside of your chassis looks!

I don't know that I've seen an Airstream chassis that clean before.

Brad
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Old 08-30-2016, 06:42 AM   #190
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Looking at Gregs Rig and set-up, you do want him to be on your team!!
Hey Greg, do yourself a favor and install a secondary latch on your genny door. I always walk around my whatever rig I own and make sure all the latches are closed and tight. On my 79 the latch would lock to the left and I turned it to the right to make sure it was latched up.... I was very lucky to find it 3 hours later on the side of the road.
Zipdee awning hooks work well and look authentic
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Old 08-30-2016, 04:35 PM   #191
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Brad, When I bought it, I crawled up under it and was astounded how clean it looked. I have since learned that other Airstreams were not as clean. Apparently this one was undercoated early in its life. It has some kind of spray on coating that is like a parafine or like bacon grease when refrigerated. Its kinda messy when you rub against it but it worked pretty good for 37 years.
Peter, Thanks for the tip on the ZipDee latch on the genset door. I have one laying in my shop. It came with the awning but, I could not figure out how to install it. Maybe I will just use it on the genset door.
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Old 08-30-2016, 05:06 PM   #192
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Quote:
Originally Posted by Gregsch View Post
Brad, When I bought it, I crawled up under it and was astounded how clean it looked. I have since learned that other Airstreams were not as clean. Apparently this one was undercoated early in its life. It has some kind of spray on coating that is like a parafine or like bacon grease when refrigerated. Its kinda messy when you rub against it but it worked pretty good for 37 years.
Most of thee Airstreams/Argosies that I have seen are pretty darn rusty. My 74 Argosy needed a fair amount of remedial rust repair, mostly on the Airstream supplied components.
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Old 09-04-2016, 12:11 PM   #193
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Success!!

Well, went to the first game of the season.
Tried on two occasions to top of the gas tank after the pump clicked off. The most I could add was 1 1/2 gallon before fuel gurgled back out the filler neck.That issue seems unsolved.
The engine developed a stumble off idle. Its unnerving when you pull away from a light and it stumbles but, it never did stall. I will have a look at the plugs and see if they are fouled. Otherwise I suspect it is a problem with the quadrajet. Seemed to run well on the highway. Clicked the cruise control in at 60 mph (3100 rpm) and she drove effortlessly down the highway. I could take my hands off the wheel and she would go straight down the road for a long time before I would have to touch the wheel to make a correction. The wife was not nearly as impressed as I was with this maneuver.

All and all, a good trip, lots of compliments on the MoHo.
Don't want to talk about the score of the game. This is not the proper forum for that.

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Old 09-04-2016, 12:30 PM   #194
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Greg, congrats on making it to your first game! It may have taken longer than expected for this to happen but when it's all said and done I'm sure it was worth the effort

Brad
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Old 09-05-2016, 08:30 AM   #195
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Pulled the plugs and checked compression. !63 -169 psi. Plugs looked good. I am using AC Delco R45TS plugs. Is there a better plug for these old 454"s? I will take a look at the quadrajet today.
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Old 09-05-2016, 09:47 AM   #196
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If you have a problem with the Quadrajet let me know. I have a rebuilder buddy of mine that can rebuild yours back to new for about $400.00, this way you don't have to change anything around. He did mine on the 325LE three years ago. Regards, Bob
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