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Questions tagged [fuel-tank]

A container within a vehicle that stores fuel for a vehicle with an internal combustion engine.

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84
votes
11answers
92k views

Does the amount of fuel in the tank matter?

As long as there is some fuel in the tank, does the fuel level matter? In other words, is it advisable to make sure the tank is mostly full most of the time, or is this just silly? In other words, are ...
27
votes
10answers
10k views

Top off gas with old oil, is that bad?

When I change my oil I don't like going all the way back to the station to drop off the old oil and I don't want to pour it in the river, so I put 17 gals of premium in my 18 gal tank and then top off ...
23
votes
4answers
9k views

Small amount of wrong fuel type put in the tank

The guy who works at a gas station was filling up for brief moment wrong fuel type in my car until he realized what he did. I own Citroen Xsara 1.9d, make year 2000. Before filling the tank which is ...
20
votes
5answers
12k views

Should I really keep my gas tank at least half full?

I've seen a number of sources that state you should keep your car's gas tank at least half full, some of which saying it's only important in winter. Some examples: http://www.osceolagarage.com/why-...
16
votes
2answers
17k views

Why would a new gas cap cause the “check engine” light to shut off?

This happened to a friend of mine: The "check engine" light came on in his truck (Toyota). He replaced the gas cap and the light shut off. Then I also had a "check engine" light come on in my 1994 ...
16
votes
4answers
156k views

How important is a fuel cap?

I lost my fuel cap a couple months ago and haven't bothered finding a replacement. I haven't noticed any issues with it, but I'm wondering whether it's causing any damage or reducing gas mileage or ...
15
votes
11answers
14k views

Why does stopping and starting a car in heavy traffic burn more fuel?

Why does stopping and starting a car in heavy traffic burn more fuel than simply coasting on a highway at 55 mph?
11
votes
2answers
15k views

Muffler off car. Safe to drive with exhaust open underneath?

So leaving work yesterday I heard a clang! - the muffler simply fell off. Further inspection revealed a lot of rust in one particular area on the pipe. Thankfully the forward muffler is still intact ...
9
votes
2answers
5k views

Is it bad on your fuel pump to have your tank run low? [duplicate]

Ive always been taught it was bad on your fuel pump to run your vehicle tank close to dry as it would damage the fuel pump but Ive never seen any validation to support this statement. So will running ...
8
votes
2answers
10k views

What is this pipe coming out of the petrol tank under the seat

Sorry, this is a newbie question, but what is this pipe coming out from the petrol tank under the seat? The bike is a 1989 Kawasaki ZZR 250:
8
votes
2answers
3k views

How to know how much fuel is left when the light turns on

In general, where can one find information about the quantity of fuel that is left in the vehicle's tank when the warning light turns on? More specifically, in a Suzuki Swift GLX (auto) 2010 model?
8
votes
2answers
3k views

How to remove tank pad glue?

I had an old and worn out motorcycle tank pad (protector) and I want to replace it with a new one. It's too late to remove it together with the glue by heating it, so now I need to find a way to ...
8
votes
5answers
6k views

Is there something I can use to replace a fuel gauge sender float?

The little ball that's attached to the fuel gauge sender in my car has a hole in it meaning that the fuel gauge isn't working. It is not possible to buy a replacement float - the whole sender unit ...
7
votes
3answers
2k views

Driving on full tank

Should filling up the tank to full capacity be avoided if possible for the fact that it increases the weight of the vehicle which could reduce the fuel efficiency?
7
votes
1answer
12k views

Why is there a hissing noise when I open my petrol cap?

When I fill up with fuel, there is often a loud hissing noise, as if you are opening a bottle of fizzy drink or something whenever I unscrew the petrol cap. It also seems like there are vapours ...
7
votes
3answers
1k views

How easy (is it possible) for an amateur to change the drain tube of a motorbike fuel tank?

The bike is a 1998/99 Honda CBR 600F. The drain tube seems to be corroded inside the fuel tank, based upon 2 symptoms: Filling the tank more than 3/4 full causes petrol to drain from the drain tube ...
7
votes
1answer
176 views

Briny/salty smell from fuel tank?

I've had some trouble with my lifter pump and so I removed the back seat of my Mk1 Golf/Rabbit to access the pump and fuel tank. As I was removing the 'lid' to access the tank the aged seal/gasket ...
7
votes
1answer
7k views

Can't fill car up with gas

I can no longer fill up my gas tank in one go. This started gradually over a few months, initially only happening at one pump at the closest station. Now, however, I can't get more than a gallon or ...
7
votes
1answer
172 views

How can I fill the tank on my older pickup truck?

I have a 1974 Ford F250 and I have an extremely difficult time filling the tanks at gas stations with the newer rubber boots on the gas nozzles. The physical shape of the older pickup truck gas filler ...
6
votes
3answers
1k views

Does the mileage indicate the quality of the gas?

I've been getting gas for my 2010 Ford Taurus at Get-go and always was able to get a full tank. The front panel indicated 420 miles left to empty Example: But now for a couple of months, I wasn't ...
6
votes
2answers
178 views

How can vehicles run on E?

Sorry if this topic is too open ended I'm new to this site. I am studying engines and how they work and I keep wondering, how do cars with no gas still manage to run for a few extra miles? If you ...
6
votes
2answers
1k views

Any techniques to remove rust from inside fuel tank without removal

Last night I ran through the entire ignition system of my 1985 Mk1 Golf Cabriolet 1.6 (Carb) Auto and managed to get a nice strong healthy spark. This allowed me to start the car on Easy Start ...
6
votes
3answers
7k views

Possible fuel filler leak in F-150 truck

I have a 2001 Ford F-150 pickup. When I refueled it yesterday, I noticed a strong gasoline smell and an oily liquid (presumably gasoline) dripping down off the bottom of the fuel tank. Only a small ...
6
votes
1answer
71 views

Fuel system question

See red arrow in the image. I place fuel additive in my car, all of the additives went into that pipe (in the red arrow image) because i didnt know how to place it. Will it still work? or just a waste?...
6
votes
1answer
923 views

The tray under my gas tank is dented. What should I be aware of before draining and removing my gas tank?

I dented the tray under my gas tank, reducing my capacity by about a gallon. It's a wide dent; there's no damage to the plastic. I'd like to drop the tank and pound out the dent in the aluminum tray. ...
6
votes
1answer
257 views

Alternative fuel consumption metric to MPG to measure actual engine efficiency?

MPG is all very well and good, considering that most people that are concerned about their fuel consumption tend to want to get as many miles as they can out of it before they need to fill up again. ...
6
votes
1answer
835 views

Paintless dent removal for old tank

Is there a way to remove dents like this on the right side of the image? I've seen suction tools but the reviews are bad. Any ideas?
6
votes
1answer
54 views

1998 Oldsmobile Intrigue - Takes fuel super slow

I think someone tried to siphon my gas tank and now it fills super slow. Like ten minutes slow. So what part might be damaged and would it be in the fuel tank itself or in the fuel tank neck?
6
votes
2answers
2k views

Honda EU3000is K1 Generator - Replace Gas Tank

I need to replace the fuel tank on a 3 year old Honda EU3000is K1 Generator. Unfortunately gas was left in the fuel tank and the tank is now rusted. I was able to get the generator working again but ...
5
votes
3answers
5k views

Leftover gas in the gas pump due to hose design

After you are done putting gas in your car, is there any leftover gas in the hose between the nozzle and up to the level of the tank opening (below the red line in the image below)? To be clearer, ...
5
votes
2answers
3k views

Engine sputters when turning left corner

In my 1986 Ford F-150 (carbureted) when I go left around a corner, the engine sputters. Feels very similar to running out of gas, but it picks back up once I stop turning. Only happens in a sharp ...
5
votes
2answers
201 views

Is it a good idea to top off the gasoline with higher octane fuel in a specific case?

When topping off the gasoline in a vehicle that is rarely driven (100 miles/month), is there any advantage in topping it off with a higher octane gasoline? I've heard stories that the octane of ...
5
votes
1answer
109 views

Which of these parts can protect my gasoline from theft?

I am aware of this question, and I believe the answer there is excellent. But what I'm asking for is the list below and what to make of it. Some people in my neighbourhood have been stealing gasoline ...
5
votes
2answers
42k views

What is the name of the part to which the gas cap connects?

I'm trying to find a replacement part for a 2005 Saturn ION. There seems to be some detachable receptacle type thing to which the gas cap screws in. The gas cap itself is fine, but one of the plastic ...
5
votes
3answers
3k views

Can't get gas in my truck

I have a 2004 Chevy Silverado. When I go to put gas in my truck it stops after like 3 dollars worth of fuel. Since I know it's not full, I click it again and gas shoots back out at me. What do you ...
5
votes
2answers
2k views

2004 Hyundai Elantra stalling when tank is full

For the first 15 to 20 minutes after starting my Elantra it idles very low and every couple minutes, idling our not, it very nearly stalls. Per the tach, the rpm dips significantly for about 2-3 ...
5
votes
3answers
390 views

Is a higher concentration of fuel system cleaner bad?

In my case I used Gumout. On the back of the bottle it says this: Add entire bottle to nearly empty gasoline tank at time of oil change. Refill tank with 18 to 35 gallons of gasoline. Do not ...
5
votes
1answer
9k views

Inaccurate fuel gauge

Is there anything I can do about my inaccurate fuel gauge? Today it was at the bottom of the red zone, and I put in 9.5 litres and it went up to half a tank, but the tank is 42 litres. I have an ...
4
votes
3answers
2k views

Getting Stale Gas Out of a Gas Tank w/out Dropping the Tank

I've got an old Chevy ('75) with a top-opening to the gas tank. The car has been sitting for 3 years without use. I want to clean the stale gas out of the tank. I have drained it as well as I can by ...
4
votes
3answers
2k views

Is it necessary to turn off the engine while refuelling?

At petrol stations in Australia, there are always several signs that say "Turn off engine while refuelling" (or something of the sorts). Is this necessary to do, and why, or is just something that is ...
4
votes
3answers
6k views

How to remove rust from gas tank?

I have heard of a couple methods for removing rust from rattling a chain/sand/rocks with diesel fuel in the tank to doing an acid treatment. Is this something I should attempt to do, pay for a ...
4
votes
2answers
14k views

Filling diesel vehicles - Vent trick

According to this site it is possible to get more diesel fuel in your tank by pressing in the vent latch on the filler neck: Look inside the filler neck and you can see a button, see below for ...
4
votes
4answers
6k views

How can increase the fuel-efficiency of my Vespa bike?

My factory Vespa bike can travel around 150 KM with its 200 CC engine and 8 lt. of gasoline. What are the suggested modifications to increase the fuel efficiency? Without modifications like getting a ...
4
votes
1answer
121 views

Why does the engine have lesser pulling strength when the fuel in the tank is lesser?

I've noticed a difference that when the fuel in the tank is low, it takes a bit more time for the bike to accelerate to a higher speed than if the fuel tank is mid level or full. Same thing said by a ...
4
votes
3answers
19k views

Leaking gas tank from rust - needs sealed. What materials should I use and how should I do it?

I have a gas tank that is leaking a few drips at a time. It doesn't seem like much of a problem except when the tank is at half full or past, and I can quickly lose 2-3 gallons overnight from the ...
4
votes
4answers
15k views

How to remove all the fluid out of my motorcycle fuel tank?

I will be cleaning out my motorcycle tank using electrolysis. First, I have to remove all the gas from the tank, and then do the cleaning and then remove all the water that's left over, but I have a ...
4
votes
3answers
7k views

Determining how many miles can be covered on full tank [closed]

I'm interested in the following cars, but the questions apply equally well to any car: Audi TT Lexus IS 200 (SE or not?) I'm finding it difficult to determine the following: How do I figure out how ...
4
votes
2answers
220 views

Forgot to use stabilizer with motorcycle

I forgot to fill my motorcycle tank with stabilizer and now it is way to cold to ride. Should I still put the stabilizer in it? I read the instructions and it is not recommended to use it if the ...
4
votes
3answers
7k views

Two-stroke engine won't start - water in gas?

I realize this isn't a car question. There doesn't seem to be an appropriate Exchange for it, so I'm trying it here. I have a two-stroke engine (for a rototiller), and it worked more-or-less well ...
4
votes
1answer
2k views

Cause of P0440 on 1999 Subaru Legacy Outback

I get a P0440 code on my Outback on almost every highway trip over 5 miles. Is this caused by the leak in the gas tank or could it be something else?