2006-12-13 20:41:40 · 15 answers · asked by taintedtom2000 1 in Cars & Transportation ➔ Maintenance & Repairs
This is a very simple answer. When you fill the tank, you not only fill the tank, but you also fill the tube that goes to the tank. Believe it or not, but the filler tube can hold as much as a liter of fuel. Once this fuel burns you will notice the register will then begin to move. This is the point at which you will have an exact full tank of fuel. You see people fill their vehicle up until the pump clicks off, and then they will put more into the tank until they fill that tube and then some. Believe it or not, but when you do this it is not good. Once it clicks off, end it right there or you stand a risk of pumping fuel back up the return line and the vent line. Once the fuel goes up the vent line, it also goes into the charcoal filter and saturates this filter. This can lead to problems with your computer setting off mysterious codes that no on can figure out.
Glad I could help. Good Luck!!!
2006-12-13 20:57:04 · answer #1 · answered by Anonymous · 0⤊ 3⤋
You get a full tank of petrol, and the worlds` your oyster, you can go anywhere! and you usually do, at twice the speed you normally do, stop, start, fast, slow down. Driving at inconsistent speed uses more petrol than if you drive at a steady 40mph all the time. Stopping and starting at traffic lights and hold ups in and around the town uses up petrol at a greater rate than a non stop drive.All these incidents drain what was once a full tank, and of course you can never use every drop of fuel in your tank. Even when you `run out` of fuel, there is still a reservoir at the bottom which just does not drain away into the fuel system, it is there but you can`t use it until you top it up, that is why when you do top up, with say one gallon the tank needle seems to swing back up so quickly.Wouldn`t it just be fantastic if cars ran on `air`?
2006-12-14 05:08:39 · answer #2 · answered by Social Science Lady 7 · 0⤊ 1⤋
Petrol gauges do not give a perfect reading only an average , it may seem quicker but that is the anxiety factor the lower it gets the more you look at the gauge so it seems to get to the empty quicker
2006-12-14 07:15:22 · answer #3 · answered by ? 7 · 0⤊ 1⤋
Wow, mine is the opposite.
The first half empties really slowly but the second half well twice round the roundabout, 2nd left, 1st right and bam its empty.
If we made our own petrol tank using my first half and your second half we would get fantastic fuel economy.
Lol
2006-12-14 04:52:31 · answer #4 · answered by angie 5 · 0⤊ 2⤋
It could happen other way too for some cars. It depends upon shape of tank.
It "may" also depends upon that gauge precession used in the car.
2006-12-14 05:02:32 · answer #5 · answered by Ravi 4 · 0⤊ 1⤋
your fuel gsuge reads that way.. it is the way the gauge reads .. some gauges are slow at first and drop quickly.. try an experiment, knowing how much your tank holds, fill it up when the gauge is on 1/2 full, and see if it really waas 1/2 full.
2006-12-14 04:50:22 · answer #6 · answered by spotlite 5 · 0⤊ 3⤋
It does so becuause the 2nd half also includes the reserve which is not shown in the guague
2006-12-14 05:14:14 · answer #7 · answered by w a 1 · 0⤊ 1⤋
It doesn't, the gauge is merely a guide to the level of fuel in the tank.
2006-12-14 04:49:44 · answer #8 · answered by RRM 4 · 2⤊ 2⤋
I dont now surly but i think,when filling it must not been goin inside. And when you start the car,bike etc it is absorbed and the petrol which was to brim have gone down.it can also because you have some problem in your vehicle.1!!!!!!!!!!!!!hope you found it useful!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2006-12-14 05:05:56 · answer #9 · answered by Anonymous · 0⤊ 2⤋
because if u completely fill it it up, you have another 1/2 a gallon in the fuel filler pipe neck
2006-12-14 04:53:52 · answer #10 · answered by neil h 3 · 0⤊ 2⤋