Common Hyundai Sonata Gas Tank Problems And How To Fix Them

At one point in your life, you may experience some Hyundai Sonata gas tank problems.

They are most certainly not fun to deal with. After all, not only can these be expensive but they can be troublesome, too.

For instance, you may have a gas tank vent hose clogged up, or it could be a slow filling gas tank problem.

Whatever the case may be, there are certain things you can do to solve the issue. Here are among the common Hyundai Sonata gas tank problems and what you can do to fix them.

Hyundai Sonata Gas Tank Problems

hyundai sonata gas tank

Let’s talk about a problem with your gas tank. For instance, it may be too slow to fill or there could be a clog on the vent hose.

Experts agree that the most common concern with a fuel tank is the clog in the EVAP or the evaporative emissions control system. This is responsible for collecting and storing fuel vapors coming from the tank. Then, these are moved to the intake manifold, which leads to combustion.

If the EVAP emissions are having some issues, then the fuel pump will only shut off repeatedly. Thus, you are unable to fill your tank. You can consider cleaning the hoses, which should be an easy fix. Or, an EVAP component replacement may be needed, if the hose cleaning does not solve the problem.

So, what can you do if the tank does not fill up? Here are some things to try:

1. Use a scan tool to conduct a vehicle diagnosis.

It is most likely that the EVAP system is the issue if you cannot fill up the fuel tank. But just the same, conduct a diagnostics on your car to really know what the problem is.

However, if you have no scan tool to use, then you can try the next steps.

2. Clean around the cap of the fuel tank.

In many cases, the EVAP system may be filled with debris. Hence, clogging happens. You can try to clean around the fuel tank, and make this a habit each time you wash your car.

3. Clean the hose.

Another thing you can do is to clean your hose that connects to the EVAP canister. This can be done with a paper towel, and a simple wiping around the connector should be all that it takes. Use an air compressor to make sure there are no clogs, as well.

Once you have conducted these steps and have the hose unclogged after cleaning it well, then you should be able to fill the tank without any problem.

But if you notice that it still does not work, then you will have to replace the charcoal canister.

Basically, the EVAP canister is responsible for filtering out hydrocarbons. Thus, pure air comes out. It filters gasoline fuels, yet at the same time, EVAP canisters are damaged when liquid gasoline accidentally gets inside when you put extra fuel.

In this case, you may need to get the canister replaced on your Hyundai Sonata. Here is a price estimate for an EVAP canister replacement:

Evaporative Emission Control Canister Replacement Service

How much does a Evaporative Emission Control Canister Replacement cost?

On average, the cost for a Hyundai Sonata Evaporative Emission Control Canister Replacement is $189 with $109 for parts and $80 for labor. Prices may vary depending on your location.

CarService Estimate Shop/Dealer Price
2015 Hyundai Sonata
Evaporative Emission Control Canister Replacement$772.62$943.10 – $1404.33
2012 Hyundai Sonata
L4-2.0L Turbo
Evaporative Emission Control Canister Replacement$914.78$1129.84 – $1724.70
2013 Hyundai Sonata
Evaporative Emission Control Canister Replacement$787.50$970.73 – $1470.14
1995 Hyundai Sonata
Evaporative Emission Control Canister Replacement$325.35$399.09 – $592.40
2011 Hyundai Sonata
Evaporative Emission Control Canister Replacement$787.50$970.76 – $1470.19
1999 Hyundai Sonata
Evaporative Emission Control Canister Replacement$949.91$1179.81 – $1841.56
1992 Hyundai Sonata
Evaporative Emission Control Canister Replacement$337.49$412.90 – $611.48
1996 Hyundai Sonata
Evaporative Emission Control Canister Replacement$330.35 $404.34 – $597.86


Additional Points To Consider

When the gas tank has a blocked vent pipe, this can be an issue that would prevent the tank from filling up.

Fortunately, you can solve this problem by performing some steps to unblock it.

  1. Give your air vent line a shot of air by extending a compressor line into it. You may hear some kind of a gurgling sound if there is no blockage. Otherwise, there won’t be any sound at all, so you will have to conduct further inspection.
  2. Blow through the canister vent line. It is only a short line, which enables you to check right away if it is blocked. You can blow out some compressed air, which may help with the clogging issue.
  3. Push through the vent pipe with a large heavy wire or a plastic tubing that’s small-gauge. This should let you determine if there is any physical blockage involved.
  4. Let the interior dry out by draining the tank. Resume the compressed air blow after reconnecting the vent hose and fuel line. At this point, there should be zero blockage.

hyundai sonata gas tank problems

Bottom Line

If you have encountered some Hyundai Sonata gas tank problems, you may try these steps to get these fixed. Or, a simple replacement of the EVAP canister may be just what you need to do.

Either way, your problem should get resolved by taking the right action – and sometimes won’t even have to cost a huge amount of money!

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