G37 Coupe

Smells like exhaust or gas when running A/C

Old Apr 27, 2016 | 10:11 AM
  #16  
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Originally Posted by telcoman

DOWN! See arrow
Might wanna research that telecomman
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Old Apr 27, 2016 | 10:38 AM
  #17  
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I did mine last fall. I don't remember which way it was pointing. If the blower motor below is blowing out, then arrows should be up. If it's sucking in, then air flow is down.
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Old Apr 27, 2016 | 12:59 PM
  #18  
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Originally Posted by saywat?
Might wanna research that telecomman
saywat

Here is a photo of the original factory cabin filter taken prior to changing the cabin filter for the first time in my 2012 G37S. Note the direction the arrow is pointing.

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The blower motor is pulling air down otherwise the dirt would be on the bottom of the filter instead of on the topside of the cabin filter when you remove it.

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If you did not install yours correctly you may want to check the arrow direction.

Telcoman
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Old Apr 27, 2016 | 02:17 PM
  #19  
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I have the same issue...mostly after hard acceleration. It doesn't happen all the time, but annoys me wgenbit does
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Old Apr 27, 2016 | 02:35 PM
  #20  
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I discovered a fuel link in the engine bay this morning when I popped the hood. I'll have to trace it to where it's coming from this evening when I have more time. Seems to be why I'm smelling fuel. However, it wouldn't hurt to change the cabin air filter either. I'm sure it hasn't been done since 2008.
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Old Apr 27, 2016 | 07:57 PM
  #21  
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Okay so it appears that fuel is slowly dripping out of the fuel pressure damper. I think I'll start with replacing the O-Ring and if that doesn't fix it, I'll replace the damper itself. Too bad the damper is $71


Last edited by mrittman; Apr 27, 2016 at 11:34 PM.
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Old Apr 28, 2016 | 12:06 AM
  #22  
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I had the same leak/ gas smell happen to me last year, from the same part you posted. Its called a fuel damper.

At first I thought the leak was from a worn out o-ring, but it ended up being the damper itself. I ended up purchasing the whole damper Assy.

Here is the part number for the part 22675JK20B, I believe it cost me like $68 or something. Comes with everything you need (new o-oring, damper and hose)

Install took me like 30 minutes or so. To relieve the pressure you can remove the fuel pump fuse and crank your car a few times to relieve the pressure. For me, I just wrapped a rag around the damper and slowly twist and pulled on the damper, letting the rag absorb the small amount of fuel that came out. The hose end has a green quick connect to disconnect it from the rest of the fuel line, I was able to do it under the passenger side behind the passenger tire. I think I also removed a bracket that was boxing in and holding the quick connect to the car body.

He is the link that helped me
07 g35x, solved gas smell in interior at idle problem - Page 2 - G35Driver
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Old Apr 28, 2016 | 12:23 AM
  #23  
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Originally Posted by 08GCoupe
I had the same leak/ gas smell happen to me last year, from the same part you posted. Its called a fuel damper.

At first I thought the leak was from a worn out o-ring, but it ended up being the damper itself. I ended up purchasing the whole damper Assy.

Here is the part number for the part 22675JK20B, I believe it cost me like $68 or something. Comes with everything you need (new o-oring, damper and hose)

Install took me like 30 minutes or so. To relieve the pressure you can remove the fuel pump fuse and crank your car a few times to relieve the pressure. For me, I just wrapped a rag around the damper and slowly twist and pulled on the damper, letting the rag absorb the small amount of fuel that came out. The hose end has a green quick connect to disconnect it from the rest of the fuel line, I was able to do it under the passenger side behind the passenger tire. I think I also removed a bracket that was boxing in and holding the quick connect to the car body.

He is the link that helped me
07 g35x, solved gas smell in interior at idle problem - Page 2 - G35Driver
Thanks man this really helps! I've been doing research for the past several hours trying to find part numbers and whatnot. I think I'll start with the O-Ring, and if that doesn't fix it, I'll purchase the whole damper assembly.
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Old Apr 28, 2016 | 01:44 AM
  #24  
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my 02 maxima had the same problem. -
Thanks for pointing out your problem.. Hope you can make a DIY of us.
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Old Apr 28, 2016 | 03:23 AM
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Here is where mine was leaking from.

Before inspecting, I used brake cleaning to clean all the residue and fuel off the damper, and then q tips to dry it. I then went for a test drive a mile or two and came back to notice fuel started collected in this area.
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Old Apr 28, 2016 | 08:16 AM
  #26  
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Originally Posted by 08GCoupe


Here is where mine was leaking from.

Before inspecting, I used brake cleaning to clean all the residue and fuel off the damper, and then q tips to dry it. I then went for a test drive a mile or two and came back to notice fuel started collected in this area.
Do you know if RockAuto has this part, or will I have to order an OEM one?

I can definitely do a write-up when I install this to help out future people
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Old Apr 28, 2016 | 10:09 AM
  #27  
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Little education for ya - this is also known as a "Fuel Pulsation Dampener" on a lot of other cars. It dampens what plumbers call "water hammer". The injectors open and close rapidly, causing the fuel in the rails to move then stop instantly, gas being a liquid and not compressable, needs some place to go when the injector slams shut, and that's where the FPD comes into play. The FPD takes the surge of fuel and "dampens" the pressure.. In almost every aftermarket situation where the fuel rail or lines are replaced they just toss this in the trash, it literally has no point besides removing the slightest of vibrations from the injectors pulsing. No emissions requirements, no connection to the ECU, nothing. I'd toss this in the bin and move on.
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Old Apr 28, 2016 | 03:58 PM
  #28  
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Originally Posted by Kris9884
... gas being a liquid and [almost in]compressable...
Fixed it for you.
Originally Posted by Kris9884
I'd toss this in the bin and move on.
Those pressure pulses travel back through the fuel rail and will cause the pressure at other injectors to increase slighty, forcing more fuel into the cylinder than ordered by the ECU. The alpha trimming should take care of it but manufacturers try really hard to meet EPA rules exactly and this is one of those last little increment items.
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Old Apr 28, 2016 | 05:00 PM
  #29  
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Originally Posted by slartibartfast
Fixed it for you.

Those pressure pulses travel back through the fuel rail and will cause the pressure at other injectors to increase slighty, forcing more fuel into the cylinder than ordered by the ECU. The alpha trimming should take care of it but manufacturers try really hard to meet EPA rules exactly and this is one of those last little increment items.

My bad, I'm usually very punctual.


I disagree, it's a spare precaution that from my knowledge, has never been the cause of an issue, even on very finely tuned fuel maps for 1000hp+ 2JZ/1JZ cars (my old stomping grounds). If your injectors are being influenced by tiny waves in your fuel rail WHILE still being under fuel regulated pressure, its a fuel regulator or injector problem, not a dampener. I wont go remove mine but if it had issues, I would absolutely toss it before buying another and would refer any friend of mine to do the same. Not trying to rant or point directly, just saying, it's by no means required and its ugly so, toss it. If you can show me a damaged injector from "hammering", I will show you a green dog.
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Old Apr 28, 2016 | 08:32 PM
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I didn't say anything about damage, I just pointed out the tossing the dampener can influence fuel flow and emissions slightly.
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