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| | | | Joined: Jan 2002 Posts: 2,842 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,842 | Met a guy yesterday at our local Farmers Market who has a '54 3100. One of his many questions to me was, what prevents the gas station's fuel pump from shutting off when it reaches full. Since I've haven't had such a problem, that I remember  ,,, I told him I would ask the experts. Any idea?
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Sep 2011 Posts: 1,458 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,458 | On these old rig the a big ail bubble will form at the top of the tank / filler neck, pump doesn't see pressure to shut off. Slowing down flow will help. Had a small tube attached to the top of the tank, going up to top of the filler neck. Allows air to to escape. Still need to slow flow down towards full but helps.
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
| | | | | Joined: Oct 2021 Posts: 6,914 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,914 | Never rely on the automatic shutoff when filling antique cars. You shouldn't do it with modern cars, either since sometimes the latch mechanism sticks.
Even old cars with vent tubes in the filler neck can't always shut down fast enough as the fuel in most pumps comes out extremely fast and overcomes the vent.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: May 2001 Posts: 1,907 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,907 | I put my ear as close as I can to the filler neck and wait for the glug-glug. Did that just this morning. Before automatic shutoffs, that's the way it was done.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
| | | | | Joined: Jan 2002 Posts: 2,842 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,842 | Oh yes, the glug-glug method.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Aug 2019 Posts: 251 'Bolter | | 'Bolter Joined: Aug 2019 Posts: 251 | Yep, I’ve even stopped for a moment to let noisy traffic go past so I could continue to listen for the glue. Plus watch the gallons on the pump to guess when it’s getting close.
1957 Chevy 3200Daily DriverPS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights/backup lights/interior courtesy lights. Follow in the DITY | | | | | Joined: Mar 2007 Posts: 4,215 Moderator | | Moderator Joined: Mar 2007 Posts: 4,215 | My 1953 panel, with the filler neck down low, was hard to fill. If the right side of the vehicle was lower than the driver's side, it would hardly fill at all. So I didn't worry about the auto shutoff. It was easy to look down the filler neck and see. | | | | | Joined: Sep 2011 Posts: 1,458 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,458 | Never rely on the automatic shutoff when filling antique cars. You shouldn't do it with modern cars, either since sometimes the latch mechanism sticks. The air in the tank being displaced by the gas being pumped in has to come out the filler neck on the tank on these ole rigs, modern rigs nozzle fits tighter to filler, air / fuel vapor enter the vapor (EVAP) canister, fuel vapors held. Farmers can tell you about plugged EVAP canisters & fuel tanks sucked in.
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
| | | | | Joined: Jan 2002 Posts: 2,842 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,842 | So this is why I've been doing the GLUG GLUG method for so many years. Kinda forgot why. Now I can reply to my friends inquiry. I find getting gas at COSTCO is pretty quiet as compared to a gas station on a busy street.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Oct 2022 Posts: 29 'Bolter | | 'Bolter Joined: Oct 2022 Posts: 29 | I had that happen one time. I didn't want to fill my tank. I got to my 5 gal, let go of the handle it kept going. should I run, squeeze the hose? then it just stopped like nothing happened. I told the people inside, they didn't seam too care much. As left I told the guy in the car behind me what happened. then left. Stan | | | | | Joined: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | Anybody remember those fuel tank whistles (gas alarm) ? | | |
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