Questions tagged [fuel-tank]

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

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What could cause my BMW 340i to show both engine codes PO171 and PO172?

I have a 2016 BMW 340i which recently turned on the check engine light. FIXD shows me this: I’ve also had two incidents where the car has struggled to start after filling up the tank. The engine ...
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2 votes
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How to arrive to an instantaneous estimation of fuel consumption using OBD2 ELM327 parameters [closed]

Problem details Hi my friends, i'm working on a project in vehicles field, and i want to make a system to estimate number of fuel litters consumed in each second or any time unit, using the OBD2 ...
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1 answer
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What's the purpose of a filler neck in a motorcycle gas tank?

Why does a gas tank have a filler neck? It's not that you can leave the nozzle there and put gas without having to hold it.
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Do you need a car's manual to determine the size of its tank?

What is an easy way to compare car models for the longest trip length that can be taken on a full tank? Electric cars are highlighting the biggest advantage of gasoline-engine cars: most electric cars ...
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Looking for a car model with huge tank size and acceptable mileage [closed]

I'm planning a road trip. I will probably spend a lot of time outside of civilization. For convenience I will take a generator with me so I can power my computer, cooking devices etc. In my country ...
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6 votes
4 answers
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Does fuel go bad after some time?

I have my bike (bought in mid-2019) sitting idle for over a year due to covid, as I went back to my hometown and left my bike in my office parking. Before leaving I refueled by bike with premium fuel ...
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14 votes
8 answers
9k views

Do cars consume less gasoline when the tank is full?

I noticed While driving my car the fuel refills last me a lot longer when I go for the full tank over the half tank. I feel that it takes a lot longer to go through the upper half of the tank than the ...
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1 vote
1 answer
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Diesel engine fuel return pressure -- how high above the engine can the fuel tank be

This is specifically regarding an inline six cylinder direct injection, external injectors, and injection pump. Circa 1998. Just a stock standard Diesel motor.... But in general also. The bush camp ...
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1 vote
1 answer
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Issue pumping gas after using a gas can on 2017 pacifica

I used a gas can to fill my tank, it is a capless fuel filler. I was not aware that there was a funnel I should have used. Ever since doing this the fuel pump at the gas station cuts off as soon as ...
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1 vote
1 answer
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Can gasket sealant be used to seal friction fuel connections?

I have a two stroke trimmer with a plastic fuel tank and plastic fuel lines. At some point, these lines have been replaced with new lines that don't quite fit in the holes the old lines did (~0.5mm ...
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1 vote
2 answers
111 views

What are these parts? Underside of Mercedes Sprinter close to fuel tank

These are from underside of Mercedes Sprinter close to fuel tank. One goes to the engine, the other to a diesel heater. I think they're too small to the fuel filters or pumps. What are they?
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Under what conditions would you consider driving without a fuel tank heat shield?

I'm more than a little surprised that searching for "fuel tank" and "heat shield" brings up no questions on mechanics.SE. Indeed the very keyword "heat shield" has not ...
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Water and methyl in fuel tank

The water in my fuel tank is getting picked up by the pump when I go uphill or downhill. I added a half pint of methyl hydrate, but that only raised the water level. The car will stall and spit for 5 ...
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In a 2004 Subaru Outback H3.0 (LL Bean) is there any way to repair a leaking fuel tank without removing it?

My fuel tank is leaking. On a 2004 Subaru Outback H3.0 (LL Bean) you need to remove the entire rear axle and exhaust components (and probably a few more things) to remove the fuel tank. My Check ...
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2 votes
2 answers
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OBS Ford fuel quantity discrepancy

I recently purchased a 1997 Ford F-250 Heavy Duty with the 7.3L Powerstroke diesel and 212k miles on it. Two fuel tanks (front and rear) with a two-way selector on the dash. When I drove it off the ...
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Where can I find reliable place to find specifications about my car?

I have a Toyota Corolla (Fielder - 1ZZ-FE). I'm struggling to find a place where I can find detailed specifications about other parts. For example, I would like to know the transmission type (CVT or ...
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1 vote
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How does this fuel tank assembly work?

I have a mini excavator (Terex HR16). I am trying to understand how the fuel tank assembly works. First some context: I was experiencing intermittent engine sputtering, sudden loss of power, and ...
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1999 4 Cylinder Gas Tank Box With multiple connectors

Hi I am replacing rear suspension components on my 1999 4 Cylinder LE Toyota Camry and realized that Toyota engineered this model's undercarriage in a way to charge consumers more for PARTS & ...
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1 vote
1 answer
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Permanent repair on fuel tank

I have a 2003 Chrysler Town & Country 3.8L with a punctured (plastic) fuel tank. I cannot find a replacement fuel tank. ~4 months ago I used a repair kit. I cleaned the tank, used coarse ...
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2 votes
1 answer
59 views

2005(B6) Audi S4 - Gas gauge

The gas gauge in my audi just kinda stopped working. By kinda, I mean that, before when I would fill up gas all the way, the gauge would sit really close to the F mark. Now, whenever I fill up and ...
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2 votes
1 answer
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Is this epoxy? And does it look like a professional repair or DIY?

Howdy! So I have a 2016 VW Jetta with a leak in the gas tank. I think I found the hole, which is in the dark spot in the photo, but my question is this: is the yellowish material around the dark spot ...
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0 votes
1 answer
751 views

How safe is it to drive with no muffler? [duplicate]

I drive a 2007 Nissan Versa with 248,000 km on it. The other day, as I was driving, The section where my muffler pipe should be welder or otherwise attached to the flange broken off. Basically my ...
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28 votes
10 answers
12k 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 ...
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3 votes
5 answers
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Fuel sender works when outside of tank, but not when in tank

I've bought a 1988 Honda Accord (3rd gen) with an issue where the fuel gauge always reads full. I removed the sender unit from the tank and cleaned it with some contact cleaner (it was kind of copper ...
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2 votes
0 answers
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Mixing DEF with Diesel

DEF (Diesel Exhaust Fluid) is a solution of urea and water. What exactly happens if DEF is inadvertently added to the diesel tank? This YouTube video: https://www.youtube.com/watch?v=aLwcm4PjyIs ...
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1 answer
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Fuel Tank Capacity

I have a Pulsar 150 2016 model motorcycle. Recently I started filling full tank fuel in my motorcycle. Yesterday I filled 17.4 litres of fuel with around 1 litre already in tank. My bike took 18.5 ...
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2 votes
3 answers
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I design custom motorcycle tanks, will the weight of the body filler used offset the balance?

I have done a couple of custom 3D tanks, utilizing body filler mostly, then carving out. I don't use loads of it, but if one side of the tank has the design, can it offset the balance? I just do not ...
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0 votes
1 answer
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When i crank my 94 Chevy S 10 it leaks gas

It just happened today. My truck shut off and acted like it was out of gas so i added some gas to it. When i started the truck up it began gushing fuel somewhere between the filler to the tank. Also ...
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4 votes
3 answers
12k 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 ...
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Why does the gas station pump keep shutting off mid-refueling?

This is a similar question to Why does my gas not fill all the way?. I have a 2017 Jeep Grand Cherokee. It seems to depend on the pump I go to, but sometimes I have a lot of trouble getting the pump ...
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2 votes
1 answer
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Red zone fuel level

When the fuel level in my car comes to the red zone I feel the running more heavy, the car needs more throttle and is more difficult to gain speed. Is this something normal??
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0 answers
211 views

Car wont take gas

When I go to gas station and take gas cap off, i feel and hear pressure towards gas cap. Then when i go to putting gas in my car, withing 30 cents of pumping, gas is overflowing. So what i been doing ...
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21 votes
5 answers
22k 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-...
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6 votes
2 answers
2k 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 ...
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0 votes
1 answer
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Does filling the tank to the maximum during heat waves induces a explosion risk?

I recently saw a picture stating that filling your tank to the maximum during heat waves may induce an explosion. The transcript of the picture : Warning ! Due to increase in temperature in ...
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1 vote
0 answers
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How fuel gauge works?

Can any one help me to understand the working theory for this fuel gauge. Is this similar to old type or does it has a digital sensor? This sensor belongs to Man-vehicle, its labeled as man tx-d683. ...
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1 vote
2 answers
106 views

my chevy cavalier 98 has not been driven since 2005 and gas tank has been empty..any hope for it

my 98 chevy cavalier has not been driven since 2005 and has sat with empty gas tank..do I have to install new gas tank?
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0 votes
4 answers
2k views

No drain in gas tanks?

According to my research most cars do not seem to have a drain in the gas tank. This is obviously a problem because there is no way to get water and sediment out of the bottom of the tank if there is ...
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5 votes
3 answers
1k 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 ...
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2 votes
2 answers
45 views

Fuel needle problem

Fuel needle won't go at full even if the fuel tank is full. It stays in the mid point of full and empty. Is there problem in the fuel tank or the fuel needle??
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2 votes
2 answers
78 views

Identifying contents of fuel can

The farm has a green jerry can that was filled with either gas or diesel last year. I'm not certain from smell alone which it is. What's a good way to identify it? Pour out a tiny amount and set ...
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2 votes
1 answer
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Does every modern car have an evap vent valve?

My car has all the evap system, canister, and solenoid valve but as I am seeing on internet, people have [a] solenoid valve on their outlet vent on canister too which open and close by ECU to let the ...
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1 vote
1 answer
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Why gas build up in tank?

My car is building gas when I open the gas tank it releases the gas, I know all about purge system and I have tried different cap and also different vapor canister too but problem still insists, for ...
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3 votes
0 answers
54 views

Fuel filler pipe issue

A wasp nest fell down my fuel filler pipe (don't ask). I need to know how hard it will be to take the fuel filler pipe off so I can get the wasp nest out? Can't put gas in my car until i do. Any ...
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7 votes
3 answers
2k 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 ...
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3 votes
1 answer
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How does the pump know the tank is full? [duplicate]

Question has been bothering me a while. When putting fuel at any gas station, when the tank is almost full, the pump just stops and makes a 'THUNK' noise. I was wondering... how the hell does the ...
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1 vote
0 answers
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Cars with single fuel type how retrieve tank level to dashboard?

I see that BiFuel cars had fuel level and type readable from ECU by using pid 0151 and 012F. Cars with monofuel don't have this pids sensors, so how the dashboard retrive the fuel level? Maybe the ...
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3 votes
1 answer
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Dirty tank or bad fuel pump

I have 2000 c240. I've been struggling with starting problem for the last 5 days. The story began when I couldn't start the car after driving for 5 minutes. I turned on and off 4-5 times after which ...
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1 vote
2 answers
6k views

Mystery White / Gray Dust on Motorcycle Gas Cap

This is pretty bizarre. I thought I knew a whole lot about fuel tanks, but this one has me stumped. I'm working on a 2003 Suzuki SV1000S motorcycle. Vehicle has fuel injection. The vehicle was ...
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24 votes
4 answers
10k 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 ...
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