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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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OT - automotive fuel filling - how does the gas station pump fillnozzle sense a full tank?
I have two vehicles that have fuel filling issues. On my 61 Falcon, I
have to pump the fuel in very slowly or else it will splash back out of the fill port (I do not remember this as an issue when I first started driving this car back in the late '70s but I had the vehicle out of service for a decade and when reinstated in '03 this was an issue - I suspect that fuel delivery volume and/or pressure increased over the years). On my '91 F150 the rear tank does not accept more that 3/4 tank capacity. On the older vehicle, there is a single large (about 2.0 in. ID filler hose between the fill port and the tank. On the F150, there are dual hoses. The inner fuel hose that transport the fuel from the fill port to the tank is 1 in. ID. THe inner hose is routed inside of the larger (about 2.0 inch ID) that appears to function as the vent hose. If I better understood how the gas pump nozzle sensed a full tank, I could proceed with changes to both vehicles. |
#2
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OT - automotive fuel filling - how does the gas station pumpfill nozzle sense a full tank?
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#3
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
I find your query amazing. Why would you think the readers of this or any newsgroup could tell you what is going on with your
vehicles better than you. Please look yourself.... it isn't rocket science. Furthermore, no vehicle would ship from the factory with those faults. So, instead of trying to modify the original design, perhaps you should just take things apart and fix the problem. Steve wrote in message ... I have two vehicles that have fuel filling issues. On my 61 Falcon, I have to pump the fuel in very slowly or else it will splash back out of the fill port (I do not remember this as an issue when I first started driving this car back in the late '70s but I had the vehicle out of service for a decade and when reinstated in '03 this was an issue - I suspect that fuel delivery volume and/or pressure increased over the years). On my '91 F150 the rear tank does not accept more that 3/4 tank capacity. On the older vehicle, there is a single large (about 2.0 in. ID filler hose between the fill port and the tank. On the F150, there are dual hoses. The inner fuel hose that transport the fuel from the fill port to the tank is 1 in. ID. THe inner hose is routed inside of the larger (about 2.0 inch ID) that appears to function as the vent hose. If I better understood how the gas pump nozzle sensed a full tank, I could proceed with changes to both vehicles. |
#4
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
On Mon, 16 Nov 2009 17:16:11 +0100, "Steve Lusardi"
wrote: I find your query amazing. Why would you think the readers of this or any newsgroup could tell you what is going on with your vehicles better than you. Please look yourself.... it isn't rocket science. Furthermore, no vehicle would ship from the factory with those faults. So, instead of trying to modify the original design, perhaps you should just take things apart and fix the problem. Steve Blink blink...blink. Not having a good day Steve? Sorry to hear about that. Gunner wrote in message ... I have two vehicles that have fuel filling issues. On my 61 Falcon, I have to pump the fuel in very slowly or else it will splash back out of the fill port (I do not remember this as an issue when I first started driving this car back in the late '70s but I had the vehicle out of service for a decade and when reinstated in '03 this was an issue - I suspect that fuel delivery volume and/or pressure increased over the years). On my '91 F150 the rear tank does not accept more that 3/4 tank capacity. On the older vehicle, there is a single large (about 2.0 in. ID filler hose between the fill port and the tank. On the F150, there are dual hoses. The inner fuel hose that transport the fuel from the fill port to the tank is 1 in. ID. THe inner hose is routed inside of the larger (about 2.0 inch ID) that appears to function as the vent hose. If I better understood how the gas pump nozzle sensed a full tank, I could proceed with changes to both vehicles. "Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton |
#5
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
wrote in message ... I have two vehicles that have fuel filling issues. On my 61 Falcon, I have to pump the fuel in very slowly or else it will splash back out of the fill port (I do not remember this as an issue when I first started driving this car back in the late '70s but I had the vehicle out of service for a decade and when reinstated in '03 this was an issue - I suspect that fuel delivery volume and/or pressure increased over the years). On my '91 F150 the rear tank does not accept more that 3/4 tank capacity. On the older vehicle, there is a single large (about 2.0 in. ID filler hose between the fill port and the tank. On the F150, there are dual hoses. The inner fuel hose that transport the fuel from the fill port to the tank is 1 in. ID. THe inner hose is routed inside of the larger (about 2.0 inch ID) that appears to function as the vent hose. If I better understood how the gas pump nozzle sensed a full tank, I could proceed with changes to both vehicles. http://www.wonderquest.com/sleeping-...-hospitals.htm |
#6
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OT - automotive fuel filling - how does the gas station pumpfill nozzle sense a full tank?
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#7
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
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#8
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
On Mon, 16 Nov 2009 13:13:49 -0600, the infamous RBnDFW
scrawled the following: wrote: I have two vehicles that have fuel filling issues. On my 61 Falcon, I have to pump the fuel in very slowly or else it will splash back out of the fill port (I do not remember this as an issue when I first started driving this car back in the late '70s but I had the vehicle out of service for a decade and when reinstated in '03 this was an issue - I suspect that fuel delivery volume and/or pressure increased over the years). Sounds like a clogged tank vent to me. Yeah, clogged vent, or too fine of a strainer in the fill hose. Anti-siphon devices can cause these problems. -- When we are planning for posterity, we ought to remember that virtue is not hereditary. -- Thomas Paine |
#9
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OT - automotive fuel filling - how does the gas station pump fillnozzle sense a full tank?
Steve L: why bother to reply when you have no usefull information? To the rest of you thanks for the suggestions (esp Rick for the link). On the F150 (still relatively new to me, bought in late June w/ a deadpump in the rear tank) I never filled the tank prior to replacing the fuel pump. The inner fill tube appeared to be quite long (extending down into the tank quite a ways) but since I had never taken apart a "modern" fuel system, I just excepted it as normal - now I understand why that tank will not accept the last 4+ gallons of fuel. On the Falcon, fuel splash back has become a universal problem for all owners of these vehicles. The fuel fill opeing is 7.5 inches above the upper surface of the gas tank and the fill pipe makes a sharp 90 degree bend. Many owners install a fuel inlet pipe and cap from a '60 or early 70s pickup so that the fill pipe is straight up inside of the trunk. I am not willing to open the truck just to fill the tank and am quite concerned about a fuel spill INSIDE of the trunk during refilling. Lately, some people have had some success with retrofitting a modern tube in a tube fuel filler system from a later vehicle (that would be actual metal working to make such a system fit the opening). I did not want to go this route until I better understood how the fuel pump nozzle worked and why some are having great success and others are not having as much success. |
#10
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
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#11
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
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#12
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OT - automotive fuel filling - how does the gas station pump fill nozzle sense a full tank?
Do NOT try to defeat that filler-tube extension that sticks down
into the fuel tank! It is there for a reason - They have to leave expansion space, or you fill the tank with cold gasoline and park in the sun, and soon you have a gasoline geyser as the tank overflows. One spark in a decent combustible air-fuel mix, and... Maybe you can. I know Jeep Wranglers(others?) had a 20 gallon optional fuel tank(15 gallon standard). The larger tank was just removing the filler extension in the tank. Still leaves the required expansion room, but allows the extra 5 gallons of fuel. I've seen that system, and it is a different tank. The factory tank is the standard two-piece stamped terne-plate steel welded at the flat seam. There's a lot of wasted space between tank and body, and the tank and it's little skid plate. The extra capacity tank is welded plate steel shaped to fill every spare inch of the cavity. And it is not cheap, because they are hand-made, and they had to submit samples (and a Jeep) for emissions testing to prove the evaporative emissions systems still works properly. -- Bruce -- What year(s)? The 5 gallon fix was posted on the Jeep group, and many forums. I'm sure they changed designs over the years. Mine had the 20 gallon tank from the factory ('99 wrangler) and the tank was the standard two halves welded at the horizontal seam. If you had the 4 cyl. instead of the 6 cyl. you got the tube that limited it to a 15 gallon fill. -- Dan H. northshore MA. |
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