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Hyundai Genesis Forum: Fuel Tank Air Filter / Fuel Filter
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  #1  
Old 10-23-2010, 06:03 PM
crhbobby crhbobby is offline
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Default Fuel Tank Air Filter / Fuel Filter

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Hi everyone...

I pulled the recommended maintenance schedule from Hyundai USAs website.

It says at 30K to have change the fuel tank air filter and at 37500 to change the fuel filter. For the V6...

Has anyone changed these themselves? I don't think I have seen much discussion anyone changing these..

Bob Hall
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  #2  
Old 10-26-2010, 02:30 PM
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Default Re: Fuel Tank Air Filter / Fuel Filter

Okay...well forget about the fuel tank air filter... What about the fuel filter - anyone?

It looks like it is in the tank and the rear seat needs to come out.


I did some searching about the fuel tank air filter... Looks like this is a Hyundai/Kia thing. I have a friend of mine that works for a company that engineers and makes the fuel systems for hyundai and kia.... He believed that they were good for the life of the car. I have seen on other forums where dealers told them that they were not "replaceable". I am taking my car in for service tomorrow so I will ask them.

Bob
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  #3  
Old 10-26-2010, 04:41 PM
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Default Re: Fuel Tank Air Filter / Fuel Filter

Quote:
Originally Posted by crhbobby View Post
Okay...well forget about the fuel tank air filter... What about the fuel filter - anyone?

It looks like it is in the tank and the rear seat needs to come out.


I did some searching about the fuel tank air filter... Looks like this is a Hyundai/Kia thing. I have a friend of mine that works for a company that engineers and makes the fuel systems for hyundai and kia.... He believed that they were good for the life of the car. I have seen on other forums where dealers told them that they were not "replaceable". I am taking my car in for service tomorrow so I will ask them.

Bob
Please post and let us know about this. I have not heard of it.
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  #4  
Old 10-26-2010, 04:53 PM
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Default Re: Fuel Tank Air Filter / Fuel Filter

I discussed this with my dealer,,, They inspected the fuel tank air filter. and found no issues. so did not replace......

The fuel filter they also suggested I skip...

so either have been done... just over 50k now.
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  #5  
Old 10-27-2010, 01:25 AM
mikec mikec is offline
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Default Re: Fuel Tank Air Filter / Fuel Filter

Fuel pump + fuel filter are one assembly inside the fuel tank - attached to the top of the tank. Remove the rear seat cushion and you'll see a squarish access plate on the body floor - undo the screws/bolts and remove it. Then you'll see the top of the fuel tank and an oval access plate; that's the main pump, assist pump, pressure regulator, fuel filter, and fuel level sensor. This assembly basically lifts straight up (after hoses are de-pressurized and disconnected); until the assembly is nearly out: that's when fuel level sensor float gets in the way - it sticks out sideways so tilt the assembly and carefully guide it out.

Just aft of the fuel tank is the charcoal canister assembly. This is the key part of the "evaporative emissions control system." Basically this system is a charcoal filled tank that absorbs gas fumes as they evaporate from the fuel tank and fuel hoses/pipes - think "Odor Eaters" for the gas tank. When the engine is warmed up and running, the engine computer trips a solenoid to have engine intake manifold vacuum suck on the canister to draw the trapped fumes out, cleaning the charcoal. The small fuel tank air filter lets fresh air into the canister. If you lift the trunk floor/carpet, you'll see a big rectangular cover plate attached to the floor... removing this allows access to the canister and filter.

mike c.
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Old 10-27-2010, 01:38 AM
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Default Re: Fuel Tank Air Filter / Fuel Filter

Quote:
Originally Posted by mikec View Post
Fuel pump + fuel filter are one assembly inside the fuel tank - attached to the top of the tank. Remove the rear seat cushion and you'll see a squarish access plate on the body floor - undo the screws/bolts and remove it. Then you'll see the top of the fuel tank and an oval access plate; that's the main pump, assist pump, pressure regulator, fuel filter, and fuel level sensor. This assembly basically lifts straight up (after hoses are de-pressurized and disconnected); until the assembly is nearly out: that's when fuel level sensor float gets in the way - it sticks out sideways so tilt the assembly and carefully guide it out.

Just aft of the fuel tank is the charcoal canister assembly. This is the key part of the "evaporative emissions control system." Basically this system is a charcoal filled tank that absorbs gas fumes as they evaporate from the fuel tank and fuel hoses/pipes - think "Odor Eaters" for the gas tank. When the engine is warmed up and running, the engine computer trips a solenoid to have engine intake manifold vacuum suck on the canister to draw the trapped fumes out, cleaning the charcoal. The small fuel tank air filter lets fresh air into the canister. If you lift the trunk floor/carpet, you'll see a big rectangular cover plate attached to the floor... removing this allows access to the canister and filter.

mike c.
Thank you for the write-up.

My Genesis is nearing 36K miles and I have done the fuel tank air filter change at 30K. A bit of contortion required but not horribly difficult. The filter is about $20 or so over the parts counter.

Thanks for the overview of how the fuel pump assembly looks. I do need to get the fuel filter replaced pretty soon, so I'll keep that in mind.
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  #7  
Old 01-25-2011, 12:11 PM
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Default Re: Fuel Tank Air Filter / Fuel Filter

Hi everyone

I wanted to comment on my thread I started a while back. I finally asked my dealer about the fuel filter replacement. I am at 40K now.

They told me that they do not consider the fuel filter serviceable since they have to get to it from the inside the tank. He said he would only replace it if perhaps the fuel pump went out, etc.

They must not like changing them... You'd think a dealer would jump all over the maintenance items suggested by the manufacturer.

Our manuals say to do the fuel filter every 37,500, and the fuel air filter every 30K. I didn't even ask about the fuel system air filter.

I suppose I will just be getting an oil change tomorrow.
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Old 01-11-2012, 10:45 AM
JimInNashville JimInNashville is offline
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Default Re: Fuel Tank Air Filter / Fuel Filter

One of the two dealers I go to recently had the car in for a 24 month service yesterday.

My 2010 Genesis 3.8 has only 11,300 miles on it. I asked him about the fuel tank air filter and he said that in general they do not replace them, and ditto the fuel filter.

I am growing increasingly concerned about the disconnect between Hyundai dealers and Hyundai's own service manual. My service writer said that you could drive the car 50,000 miles and that air filter would still be clean. He quoted me a price of over $200 to replace it.

One has to be careful. Will Hyundai void your warranty if you have a major engine failure, EVEN IF this item had nothing to do with it?

It might be (I am not saying it necessarily is) that this flat rate item has a low profit or even a loss to dealers, and so they are more interested in pursuing high volume high profit oil changes than they are fuel filter replacements.

An alternative interpretation is that the service writer knows these items are hugely over-engineered yet difficult to replace, and is trying to save the customer money.

Which brings me, once again, to a fundamental question. WHY, given the fact that this is a premier forum in North America for Hyundai Genesis owners, isn't Hyundai actively monitoring this forum and providing some guidance to us??
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  #9  
Old 01-11-2012, 10:49 AM
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Default Re: Fuel Tank Air Filter / Fuel Filter

Quote:
Originally Posted by JimInNashville View Post
My service writer said that you could drive the car 50,000 miles and that air filter would still be clean. He quoted me a price of over $200 to replace it.
Any dealer that would quote $200 to replace the Air Filter, I could not run fast enough away from it. You can replace the air filter in 10 minutes yourself with almost no tools.
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Old 01-11-2012, 11:19 AM
STREETS STREETS is offline
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Default Re: Fuel Tank Air Filter / Fuel Filter

He is talking Fuel Tank Air Filter- who knew?! Leave it be....
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