Gas Leaking From Bottom of Car, What to do!

Gas leaking from the bottom of your car may be a result of a faulty fuel line or something more serious, but this is however dependent on the location where you noticed the gas leaking from. To get additional information on what might have caused your gas to leak and how to go about fixing it continue reading this article.

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We have also taken our time to explain properly the cause and possible solutions of gas leaking from the bottom of your car.

Gas Leak In Car Symptoms

your car gas can leak for several reasons and the symptoms might differ from one to another, while some symptoms might be similar to others it is a thing to be worried about if your gas is leaking as it poses a danger of fire hazards. Some of the symptoms of gas leaks in a car include:

  • An inexplicable drop in the fuel gauge
  • Perceiving a slightly sweet smell of gas that may make you feel like throwing up
  • Build up gas puddles underneath your car
  • Excessive strain when you are trying to start the engine or you are finding it difficult to start the engine of your car
  • Unsmooth functioning of the car while the engine is running but the vehicle is not moving.

Listed above are some of the very common symptoms of a gas leak in a car with the top symptoms being the smell of gas in your car while you are driving and also feeling lightheaded in the process.

Car Gas Leak Repair Cost

Depending on what causes the gas leak in your car, repairing it will most likely cost anywhere between $150 and $1500 including the mechanic fee.

There are two main causes of car gas leaks with one of them easier to fix than the other. The two main causes are the puncture of the gas tank and the corrosion of the gas tank.

Corrosion of the gas tank is caused by wear and tear most especially around the seams, it is easier and cheaper to fix. On the other hand, if it is the case of a bank puncture then you should be ready to have the entire gas tank replaced and this is on the high side as it is quite more expensive than the regular fixing.

How Long Does It Take To Fix A Gas Leak In A Car?

How long it will take to fix a gas leak in your car will depend on what caused the gas to leak in the first p[place.

If it is to just repair the gas leak it will take anywhere between 30 minutes to an hour to have it fixed but if it is to have the full gas tank replaced, it will take anywhere between 3 days to a week, as the mechanic will first off order the gas tank and that can take a few days to be delivered before he can commence work on having it replaced.

Pulling out the tank for either replacement or repairs means the mechanic will have to take time to inspect the fuel lines, drain the gas, disconnect the fuel lines, disconnect the holding straps, and finally remove the tank.

All these will take a little bit of time before it is achieved so if you are taking your car in for a gas leak repair or

Why Is Gas Leaking From The Bottom Of My Car?

Gas may be leaking from underneath your car as a result of damage to the fuel system and some components of the fuel system like the fuel lines, fuel tank, gas caps, hoses e.t.c.

If the gas cap is faulty, it will make your gas or fuel evaporate from your gas tank into the atmosphere and lead to decreased fuel economy, and also cause environmental pollution. The gas cap is primarily responsible for sealing the fuel tank in a vehicle.

How to Fix Gas Leaking From the Bottom of My Car

Losing fuel is the least of your problems if your gas is leaking, and it is very easy to identify if your gas is leaking just by perceiving the smell of gas when you are driving, or simply by paying close attention to your gas gauge or you may have noticed a puddle underneath your car,

Gas leaks are not something to be taken lightly hence when you notice them the first thing that should come to your mind is how to have them fixed immediately before they may lead to another form of complications.

Simply follow the outlined steps listed below if you notice your car gas leaking, the steps are:

  • First and foremost, it will be important to try and locate where the leaking is coming from or locate what is causing the gas to leak, if you can find this out it will narrow down the problem. Since there are many reasons why your gas can leak from under your car it will be wise to find out what the problem is before looking for possible fixing it
  • If you find out the problem might be the O-rings on the injectors have them replaced, you can consider checking out the gas caps as well and have them replaced if it is defective, check the gas line as well, and have it replaced as well.

Those above tips should be able to fix the leaky gas issue on your car if it persists then consider taking a look at the gas tank, if your gas tank is defective you can have it fixed by following the following guides:

  • To easily gain access to fixing the car, I will suggest you will lift the car by using the jack stand to support it,
  • Proceed to determine where the leak is coming from by checking underneath the car
  • Clean the gas tank after draining the gas, remove all dirt and grime, particles from the tank, and then apply the repair kit
  • Refuel the gas tank after repair; the leak should have been fixed by now.
  • This trick will however not work on a large tank hence the need to have it replaced and not repaired.

Gas Leaking From Bottom of Car

How Serious Is A Gas Line Leak?

Gas line leak is a very serious issue as gas leak increases the risk of fire and explosion so it should be checked immediately, in the case of gas line break it is best to have it fixed right away to avoid fire outbreak and also save fuel economy.

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Can I Drive A Car With A Gas Leak?

No. you can’t drive a car with a gas leak because it is not safe. Gas is very flammable and it can lead to a serious fire outbreak if you decide to drive a car with a gas leak.

Get your car to a mechanic immediately if you discover your gas is leaking for you do not put yourself or others around you in danger.

Gas leaks are one of the main causes of vehicle fires and it is an extremely dangerous situation, it can either start a car fire inside the car itself or the fire might start from the puddle of fuels left behind when your car moves.

It is preferable to not take the risks of driving your car if it is having a gas leak.

If a car catches fire with passengers inside, it can be detrimental to them and either causes serious injury or death to the occupants of the car, even when there are no passengers inside a car and a car caught fire, those around the vicinity might seriously get injured. Aside from the risk of the car catching fire, you may be exposed to carbon monoxide when you are driving a car with a gas leak.

Carbon monoxide is odorless and colorless but it is very dangerous and since is a component of fuel, when it is leaking it can be easily inhaled, it can cause symptoms of flu and cold if it is inhaled in small quantities, but in large quantities, it can be lethal.

How Much Does It Cost To Fix A Gas Line Leak In A Car?

On average it will cost around $50 to $100 to fix a gas line leak in a vehicle. Having a gas line leak in a car will cause several problems in your vehicle when you least expect it.

For a simple gas line repair consider spending $60 to $100 and for a more complicated one, you should consider having $120 upwards.

The price will depend on the fuel leak coming from; it can either be from the fuel line from tank to fuel rail, injector, or just too many areas where leaks can occur. Since it is usually visible, less time is needed to diagnose the problem, so it can be pinpointed easily, and if a fuel line, which is typical, pretty easy to repair or replace the rotted area.

How Much Does It Cost To Fix A Leaking Gas Tank?

To fix a leaking gas tank, you will need to have $1300 to$1400 as this might likely be the cost to fix it.

The gas tank itself cost $1000 but this price depends on the make of your vehicle and the model of your car.

Your mechanic labor charges will be around $250 and $350, but if you have got a good relationship with your mechanic, he may reduce the labor fee for you.

Where Does Gas Leak from A Car?

There are quite a several places where gas can leak from a car. Gas leaking from a car is not abnormal, and leaking gas might be as several reasons but the most prominent reason being the fuel systems. There are many components in the gas system that can become faulty and cause your gas to leak from the car. It may either be a hole in your gas tank, a broken fuel line, or old and worn-out fuel injectors.

Gas can leak from the hose if the hose become worn out, cut, or punctured, even hoses that are not properly fixed can also cause gas to leak from the bottom of a car.

A faulty O-ring can be a cause of oil leaking in your car, the O-ring is responsible for keeping oil from getting into the combustion chamber, and after extensive use, it can become brittle hence causing your gas to start leaking.

Excessive vibration on the other hand can cause some of the parts responsible for the movement of gas around can get loosed and also cause gas leakage from the bottom of your car.

Others include damaged gas caps, damaged gas tanks e.t.c.

Can You Patch A Leaking Gas Tank?

Yes, you can patch a leaking gas tank depending on the extent of the damage that the gas tank has suffered.

You can make use of repair kits to consider patching the leaking gas tank that is if you do not want to go through the options of totally having the whole gas tank replaced.

As soon as you notice your gas tank leaking, it will be wise to have it paired

Can a Hole In A Gas Tank Be Repaired?

Yes, a hole in the gas tank can be repaired if it is not that extensive, there are repair kits you can get your hands on to fix repairs in your gas tanks. Most leaks are visible while with others you may probably get to get under your car or probably have the whole gas tank removed so you can have access to where the hole is and fix it appropriately.

You can make use of Epoxy putty or decide to weld the tank, if the two listed route is what you decide, you will not get to spend more than $200 to have it fixed.

If the hole is located at the top of the tank and it is small, then it will be simple to have it fixed, simply make use of fiber glass-epoxy to have it fixed. Having a bigger hole on the other hand is something serious as a bigger hole will quickly empty your gas tank of gas, it is best the whole tank is removed and then welded before it is put back into the car.

Is It Safe To Drive A Car That Smells Like Gas?

No. it is not in any way safe to drive a car that smells like gas. The first thing to do if you feel or if your car smells like gas is to check the gas cap if it is placed or closed properly, this is because a gas cap that is not properly closed will let your gas evaporate into the air making your car to smell like gas, if this is the case, I will advise you tighten your gas cap to see if the problem persists.

If the problem persists, then it will be prudent to check other avenues like checking the gas tank for leaks or checking the fuel line for any worn-out parts.

In the case of a gas leak, it is most beneficial to have it fixed as soon as possible, with a gas leak, there is a high chance of starting a fire and it is not only a danger to you but will pose danger to those around you.

Can You Drive With A Leaking Fuel Line?

No. it is not advisable to drive with a leaking fuel line this is because there is a high potential for injury, burns, and even death from the result of fuel leaking.

It is of utmost importance to get the car to an authorized mechanic immediately to have it fixed, do not take the unnecessary risk, and put yourself and others around you in danger by driving with a leaking fuel line.

Car Leaking Gas Only When Running, What to do

If your car gas is only leaking when the engine is running it might be as a result of a faulty fuel line or a faulty fuel injector, if your car fuel injector is faulty and not working improperly, it may cause fuel to leak from the engine when it’s running.

Another reason why fuel might also be leaking from your car is as a result of a clogged fuel filter, if your fuel filter is clogged it will prevent fuel from properly flowing into the engine hence it will cause leaking in your car.

One option to fix a car leaking when the engine is running is to simply replace the faulty fuel injector, and another option is to declogged or better still replace the fuel filter, doing the stated solutions above should stop your car from leaking fuel when running.

Car Leaking Gas When Parked

The main reason why your gas may leak from your car when your gas is parked may be as a result of the faulty gas tank.

When there is a small crack or a small hole in the gas tank, it will cause the gas to leak even when the car is parked. The solution to stop the gas from leaking from your car when parked is to fix the hole or the small crack by either using epoxy or welding it.

My Car Is Leaking Gas and Won’t Start

Car leaking gas and won’t start might be as a result of the leaking gas, you will have to fix the gas leak first, refuel the car and the car will start.

Due to the result of the gas leaking, the needed amount of gas that is needed for the engine to start was not made available to the engine, hence causing the car’s inability to start.

Another reason why your car is leaking gas and won’t start may also be a result of a rusted fuel line or a burst fuel hose.

Consider finding where the gas is leaking from by jacking up the car, and getting under it, once you have located where the gas is leaking from proceed to have it repaired by either doing it yourself or getting your mechanic to have it fixed for you.

Author: Mechanic Mike Besso

Hi There, I am Mike Besso and this website is dedicated to the automotive industry. I have been a mechanic for many years and my experience includes fifteen specialization in heavy commercial work as well as private cars. I am a specialist and certified automotive mechanic (Both Heavy Commercial and Private Cars). I worked for a long time at Global Rebound Automotive companies (Toyota, TATA, BMW, Nissan, TVs, and Others ) as a Mechanic and Mechanics Supervisor. I hope to share some of my knowledge with others.

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