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Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
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09-18-2006, 09:25 AM | #1 | |
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Don't overfill your fuel tank
Can anyone tell me what have written in this blog is true ?
http://overfillfueltank.blogspot.com/ Thanks |
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09-18-2006, 11:08 AM | #2 | |
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Re: Don't overfill your fuel tank
Pretty much all true, thats why fuel stations have warning signs that say "Do not top off", for exactly those reasons.
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09-18-2006, 01:37 PM | #3 | |
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Re: Don't overfill your fuel tank
#4 is about the only one with any real basis.
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09-18-2006, 03:47 PM | #4 | |
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Re: Don't overfill your fuel tank
Let me guess, blogs are now considered accurate sources of reliable information?
Its all a crock of shit.
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09-18-2006, 07:23 PM | #5 | |
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Re: Don't overfill your fuel tank
mine clicks off if i fill it too fast. i cant just set it on the clicks and walk away. i have to hold it half open. if i set it and leave, it will click off a dozen times or so before the tank is full. ( i know this because i go in with an empty 26 gallon tank and it clicks off after 10 seconds for all those out there who will argue that i am overfilling)
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09-18-2006, 09:56 PM | #6 | |
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Re: Don't overfill your fuel tank
The technical info was somewhat jumbled and misleading.
However, the basic message is good for the general public who know nothing and care even less about cars and how the work. For them, the advice is probably good. |
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09-25-2006, 01:28 AM | #7 | |
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Re: Don't overfill your fuel tank
The main problem with topping off your tank is that the evap hoses can become covered with liquid fuel. The evap system takes excess vapors from the tank and introduces them into the intake instead of venting them to the atmosphere. If you top off the tank it can introduce liquid fuel to the charcoal canister which is only designed to handle vapors.
The problem I have is that every fuel pump is adjusted differently. Sometimes you can top it off five or six times and other times a pump will spit fuel back at you on the first click. Its also widely variable based on the fuel tank. My 73 station wagon's fuel cap is literally a hole in the top of the tank, while my previous 87 BMW had at least 4 feet of hose that led to the tank. I say, let the pump click and leave it alone... except with diesel. It tends to foam up making the pump click too soon, and most diesels don't have evap systems anyway.
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09-25-2006, 04:14 AM | #8 | ||
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Re: Don't overfill your fuel tank
Quote:
But now each year the diesel gets frothier and frothier. |
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09-25-2006, 10:04 PM | #9 | |
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Re: Don't overfill your fuel tank
Sometimes the noddles become bad and then it clicks at like 2 gallons in when you're filling form a 1/4 tank. That clicker thing isn't the best to go by.
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09-25-2006, 10:09 PM | #10 | ||
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Re: Don't overfill your fuel tank
Quote:
I spent 5 years pumping gas from 95-2000, then 4 years driving trucks from 2000-2004. I still drive the odd truck when needed, and so still fill the odd tank with diesel. It would be fair to say Iv pumped more fuel than the average person IMO the amount of froth hasn't changed one single bit. Altough fuel tank and filler design can have a large infulence on how much the froth there is.
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09-25-2006, 10:20 PM | #11 | |
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Re: Don't overfill your fuel tank
Every time I run dishwashing liquid though my tank to clean the injectors, I get froth for the next few fillups.
(sorry, I couldnt resist)
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09-25-2006, 10:32 PM | #12 | ||
That thing got a Hemi?
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Re: Don't overfill your fuel tank
Quote:
over here, you just can't keep clicking it. there comes a point where it won't click anymore, you click it 3-4 times and that's it, it refuses to put any more in. of course you can position the nozzle in such a way that the vacuum valve allows you to pump away, but then you find fuel pouring out of the filler and down the side of your car. many trucks here use special "filler inserts" which is like a machined steel "cage" so a hose can't but put into the tank in order to drain it and steal the fuel.
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09-26-2006, 12:24 AM | #13 | ||
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Re: Don't overfill your fuel tank
Quote:
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09-26-2006, 01:08 AM | #14 | |
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Re: Don't overfill your fuel tank
its especially bad if the orientation of the filler nozzle is in the "more-downwardly" position than it would be if you were facing the car the other way on the slight hill at all pumps...
(i really hope that made sense) i think it has something to do with the fact that when the filler neck fills up with gas because you are pumping too fast (pervert), facing down hill, or the neck has been kinked, ect... it clicks off. once the gas has settled down and is not all 'bunched up' in the filler neck, things go just fine (in my experience) usually for me, this results in obscenely long fillups, as i have to sit there and hold the stupid lever so that gas is noly coming out at about half speed (i do have a 26.5 gallon tank tho) |
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09-26-2006, 05:34 PM | #15 | |
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Re: Don't overfill your fuel tank
I once heard it click, and at previous times with the gas station, it would click off if it was close, but too fast. So I kept popping it, it kept clicking. I finally looked over and saw all this gas running down the side of the Jeep. whoops.
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