Jump to content

Progressively increasing gas smell

Gilbert Taylor
 Share

Recommended Posts

Gilbert Taylor New Member

Gilbert Taylor

Posted
Posted (edited)

I have a 2014 Sierra with 95k for miles.  A/c doesn’t hold a charge so I have it shut off.  About two months back my wife noticed a gas smell around my truck. At first is seemed to be towards the area of the fuel tank.  I have been watching and poked around a bit.  I don’t see an leaking fuel as I don’t see anything dripping under the truck.  I have also noticed that sometimes it is an oil smell. 

 

There is no difference in smell if I have just fueled up, near empty or anything in between.  Says it has been getting colder out. I’m starting to smell the gas in the cab of the truck more frequently.  I seem to also smell it more after I have backed up.  If sitting for a while the smell is only faintly detectable outside around the vehicle, but not inside the vehicle.  The odor isn’t constant but is becoming fairly regular now.  I can’t smell it when on the highway but that might because of the speed I am traveling at.

 

I had this issue? What does anybody have any idea what the problem might be?

 

thank you

Edited by Gilbert Taylor
Update and correct composition
diyer2 Senior Enthusiast

diyer2

Posted
Posted

WOW

Really good English composition.

Shower more fella.

  • Like 1
newdude Senior Enthusiast

newdude

Posted
Posted
42 minutes ago, Gilbert Taylor said:

I have a 2014 Sierra with 95k for miles.  A/c doesn’t hold a charge so I have it shut off.  About two months back my wife noticed a gas smell around my truck. At first is seemed to be towards the area of the fuel tank.  I have been watching and poked around a bit.  I don’t see, to be leaking fuel as I don’t see anything dripping under the truck.

 

There is no difference in smell if I have just fueled up, near empty or anything in between.  Says it has been getting colder out. I’m starting to smell the gas in the cab of the truck Maureen will frequently.  I seem to shower more after I have backed up. And sitting for a while the smells faintly detectable outside around the vehicle., But not inside the vehicle.

 

I had this issue? What does anybody have any idea what the problem might be?

 

thank you

 

 

Do you live where it snows and they salt the roads?  If so, top of the fuel tank, the top of the sending unit has most likely rotted out and has a hole, either small or large.

  • Like 4
Gilbert Taylor New Member

Gilbert Taylor

Posted
  • Author
Posted

Sorry for the comp, was using speak to text.   I fixed it to make diyer2 happy
 

thank you new dude, yes I live in new England.  Is the top of the tank going to be visible enough without dropping it?

 

thank you, itsTim. No, I don’t someone said it was probable the condenser.  I only mentioned it because I had seen a posting where someone had had a gas smell when their AC was on.

diyer2 Senior Enthusiast

diyer2

Posted
Posted

Thanks Gilbert.

Just a thing of mine. Trying to decipher a post to be helpful makes me move on. 

newdude Senior Enthusiast

newdude

Posted
Posted
1 hour ago, Gilbert Taylor said:

Sorry for the comp, was using speak to text.   I fixed it to make diyer2 happy
 

thank you new dude, yes I live in new England.  Is the top of the tank going to be visible enough without dropping it?

 

thank you, itsTim. No, I don’t someone said it was probable the condenser.  I only mentioned it because I had seen a posting where someone had had a gas smell when their AC was on.

 

 

You might be able to hold your phone up and with the flash on, take a picture.  Can't stick your head up and look.  Sending unit is about 10 inches forward of the rear of the tank, about 1-2 inches forward of the rearward tank crossmember.     

 

 

rav3 Senior Enthusiast

rav3

Posted
Posted

here's a good video to watch...hope it helps

 

 

  • 4 weeks later...
Gilbert Taylor New Member

Gilbert Taylor

Posted
  • Author
Posted

Just an update, I was able to see up on top of the tank with a mirror, seems to be leaking at the fuel pump. I bought it into my local mechanic, he agrees. Part is on order now, however he also noticed that the crossmember that the tax wraps too he’s also badly rusted. He says this is also a common problem that he sees and GMC is.

  • Like 1
  • 1 year later...
Stephen Widomski New Member

Stephen Widomski

Posted
Posted

I'm having the same issue with my Silverado 1500 wt 2014.

No engine light. Had an auto body shop do a scan and print it out. No issues with the emissions. They inspected the truck couldn't find it leaking anywhere. Pulled out the bedliner wash the bed and the plastic liner. The smells still exists... Somebody at the auto body shop said they had a problem like that once after they changed a fuel filter The problem went away. The fuel filter is located inside the tank. There's no engine light on and it past emissions.

Wondering if it's the EGR valve for the fuel filter canister is. It's normally open when it's not energized. Maybe that's where the smell is coming from...

  • Like 1
swathdiver Senior Enthusiast

swathdiver

Posted
Posted
32 minutes ago, Stephen Widomski said:

Wondering if it's the EGR valve for the fuel filter canister is. It's normally open when it's not energized. Maybe that's where the smell is coming from...

The filter is more like a sock to keep large contaminants out.  You most likely have a leak on top of the tank or your EVAP canister has fuel in it from trying to pump when it clicks off.  

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      Its no wonder you've gravitated to the oil types and brands you have in later years after trying certain brands and one being a specialty oil or at least very hard to come by up here and the other would have been a commonly found oil of the era and the vastly different outcomes as a result to using the vehicles in question the same distance for an OCI . It shows what marketing hype can do without actually having the product to back up the claims and that is no different now with the insane claims that are written on the side of a bottle of oil from some of the off the shelf oils.    What has surprised me and I was already finding this out before I bought my truck with the GDI engine, that this newer fancy technology that seemingly would suggest better fuel economy/emissions with this high pressure spray of fuel is not in reality kind at all to the engine or at least the oils life. Yet they insist on claiming long OCI with this technology just like they did with the port or similar type fuel injection systems when in reality its a step back in oil life to have a GDI system.    I think the mistake your making Grumpy is that your not sending your samples to Blackstone and getting the feel good glowing report that you can run it another 1000 or more miles and then send another sample where they say run it yet another 1000 miles and on and on it goes until your sending in something that looks a lot like road tar and then they may suggest you change your oil within the next 1000 miles 😆
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      I am guessing that engines of that design back then had a better ability to be abused and survive longer than a new design engine with the long timing chain and the overhead cams and phasers etc. But I would never guess that an engine could go that far and not fail spectacularly or at least die a slow death. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      In the 80's 90's I'd run Honda's 7,500 miles between changes using Red Line HP 5W20 and do it for hundreds of thousands of miles with issues. Back in the day it was an SAE 20 with the HTHS of a SAE 30 and SN add load. It was also very polar. Oxidation VOA was over 120. Besides those motors were SPFI and lean burn tech. I could have likely run it longer but never did.    We had a Toyota bought new I ran on Pennzoil's latest and greatest synthetic of the day with "Penthane". A made up word for a very low dose of PAO. Tried 7,500 mile OCI's in that Group III/VI chemistry and the rings tapped out at 90K. Rocker box wasn't as bad as the one Punch put up but it wasn't good either. Also a SPFI motor.    I'm around 3,750 across the board on these GDI monsters and the oil it tapped out by then usually on TBN/TAN crossover and color. Red Line HP Euro.    The AMSOIL SS brochures tell you to follow the OEM values for the service class but that it can be run up to 25K if monitored. I can't imagine what motor could go that distance and not tap out. I've never owned one.    Yes, I know. Lot's of people do. I'm just not going to be one of them. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I knew a guy in the early 80's that bought a new Monte Carlo and ran it a 100,000 miles without ever changing the filter or the oil. Just kept adding. It looked like that inside.     
    • whenindoubtuseahammer
      My First Project and GMC has me stumped

      By whenindoubtuseahammer · Posted

      Good evening. I was lucky enough to get passed down to me a 2007 GMC LBZ that was my great uncle's. While the underside and rockers are more or less gone I feel like with time I can restore it to working order since it only has 110,000 miles and he put nearly every option he could get without getting the new body style since he did not trust DEF. So far I have done everything I can think of but when I put the key into the ignition nothing happens. I put 2 brand new batteries in it. Cleaned the terminals. Check all the fuses and relays and they all pass with my multimeter. I know I'm missing something that I just cant think of. The only odd thing is the OBD2 port works which makes me think its not the mega fuse. Any advice would be greatly appreciated. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...