Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

Anyone smelled gas after spinning out?

Thread Tools
 
Search this Thread
 
Old 09-22-2013, 07:13 PM
  #1  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Anyone smelled gas after spinning out?

Bit wet in the neighborhood and wasn't paying attention to the green light and so I accidentally broke loose.

I then was able to smell the odor of gasoline. I figured it was due to another vehicle or a spill, but could it have been me?

The fuel tank, btw, was at about 1/8 to 1/4 of a tank full. So, mostly empty.

I ask because I get very bad gas mileage and although I generally have a non "lead foot", I thought maybe this is a symptom pointing to something wrong with the fuel system.

Cheers.
Old 09-22-2013, 07:29 PM
  #2  
Registered User
 
scope103's Avatar
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes on 649 Posts
I've heard reports here of trucks in the rust-belt getting slush, etc. on top of the fuel tank. It rusts out the top of the tank or the return lines. A small hole in the top of the tank (or a broken evap line) could allow fuel to slosh out.

If you were in California, smog testing includes an evap test (the tank is pressurized to confirm no leaks; OBD II vehicles have this built-in). Short of that, have you ever removed the gas cap on a warm day? Did fumes rush out? If not, you have a leak in the tank or evap line.
Old 09-22-2013, 08:21 PM
  #3  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by scope103
I've heard reports here of trucks in the rust-belt getting slush, etc. on top of the fuel tank. It rusts out the top of the tank or the return lines. A small hole in the top of the tank (or a broken evap line) could allow fuel to slosh out. If you were in California, smog testing includes an evap test (the tank is pressurized to confirm no leaks; OBD II vehicles have this built-in). Short of that, have you ever removed the gas cap on a warm day? Did fumes rush out? If not, you have a leak in the tank or evap line.
I live in Seattle, but this is still helpful. If it's leaking, it's leaking while running, which makes me wonder where I should begin to look.
Old 09-22-2013, 09:59 PM
  #4  
Registered User
 
Gevo's Avatar
 
Join Date: Sep 2013
Posts: 1,631
Received 109 Likes on 67 Posts
Well, a well sealed system should not leak any fumes, or of course gasoline.

So, do you smell gasoline any other time? Or just that one time and only after you spun out?
Old 09-22-2013, 10:50 PM
  #5  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by Gevo
Well, a well sealed system should not leak any fumes, or of course gasoline. So, do you smell gasoline any other time? Or just that one time and only after you spun out?
I've never smelled gas, but I've also never really looked for it.
Old 09-23-2013, 11:39 AM
  #6  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by briholt
I've never smelled gas, but I've also never really looked for it.
I'm going to see if I can reproduce the gas odor. My wonder is whether it would be likely to be from the engine compartment or the tank. If I'm detecting it in the cab, my hunch is that it would be in the engine compartment.
Old 09-23-2013, 01:33 PM
  #7  
Registered User
iTrader: (3)
 
vasinvictor's Avatar
 
Join Date: Jun 2008
Location: North Central, AR
Posts: 1,979
Likes: 0
Received 3 Likes on 3 Posts
Check your EVAP canister and see if any lines are pulled loose there.
Old 09-23-2013, 03:13 PM
  #8  
Registered User
 
Stevesk88's Avatar
 
Join Date: Feb 2010
Location: Deadwood, SD
Posts: 482
Likes: 0
Received 0 Likes on 0 Posts
Tell me...How do you break away on accident in a yota? lol C'mon now man. It'd require at least a three grand clutch drop and you just dont do that without meaning too lol
Old 09-23-2013, 03:15 PM
  #9  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by Stevesk88
Tell me...How do you break away on accident in a yota? lol C'mon now man. It'd require at least a three grand clutch drop and you just dont do that without meaning too lol
Believe it or not, Seattle is pretty dry in the summer. This was new rain, oily pavement, nothing in the bed. And...I was not paying attention to the light which had just turned green, so, was trying to move quickly.
Old 09-23-2013, 03:23 PM
  #10  
Registered User
 
Gevo's Avatar
 
Join Date: Sep 2013
Posts: 1,631
Received 109 Likes on 67 Posts
Originally Posted by briholt
I'm going to see if I can reproduce the gas odor. My wonder is whether it would be likely to be from the engine compartment or the tank. If I'm detecting it in the cab, my hunch is that it would be in the engine compartment.
How do you plan on trying to reproduce it? D maybe there is a tool to test pressure in the fuel evap system. Something you can get on loan from a parts store.?
Old 09-23-2013, 03:52 PM
  #11  
Registered User
 
Chaser Johndoe's Avatar
 
Join Date: Jun 2013
Location: Iowa
Posts: 219
Likes: 0
Received 0 Likes on 0 Posts
check your fuel lines up behind the tank. Mine recently rusted out but it would gush out not just dribble. While you are there check the brake lines too.
Old 09-23-2013, 05:33 PM
  #12  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by Gevo
How do you plan on trying to reproduce it?

Break it loose, of course! Though I'd be surprised if I could pull it off.
Old 09-23-2013, 05:34 PM
  #13  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by Chaser Johndoe
check your fuel lines up behind the tank. Mine recently rusted out but it would gush out not just dribble. While you are there check the brake lines too.
Check the brake lines for what?
Old 09-23-2013, 07:10 PM
  #14  
Registered User
 
Chaser Johndoe's Avatar
 
Join Date: Jun 2013
Location: Iowa
Posts: 219
Likes: 0
Received 0 Likes on 0 Posts
rust
Old 09-23-2013, 07:37 PM
  #15  
Registered User
 
Gevo's Avatar
 
Join Date: Sep 2013
Posts: 1,631
Received 109 Likes on 67 Posts
Originally Posted by briholt
Break it loose, of course! Though I'd be surprised if I could pull it off.
touche!
Old 10-04-2013, 03:45 PM
  #16  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by scope103
Short of that, have you ever removed the gas cap on a warm day? Did fumes rush out? If not, you have a leak in the tank or evap line.
Just had a chance to refill and upon opening the gas tank there was a sucking sound similar to a vacuum being equalized.

So, good on that front.

I've also checked my hoses under the hood and they all look secure, though I'll need to look again more methodically.
Old 10-04-2013, 03:56 PM
  #17  
Registered User
 
scope103's Avatar
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes on 649 Posts
Originally Posted by briholt
... there was a sucking sound similar to a vacuum being equalized...
Sucking? That's bad. The "vented" fuel cap allows air in (otherwise, the fuel pump would either crush the tank as it emptied, or more likely, would eventually not be able to pump against the vacuum). It does not allow fumes (or any gas) out; that's what goes to the evap canister.

So you should hear fumes escaping, not sucking, as the tank is lightly pressurized by the evaporating fuel.

Of course, what you describe as a "sucking sound" might be fumes escaping.
Old 10-04-2013, 06:18 PM
  #18  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
Originally Posted by scope103
Sucking? That's bad. The "vented" fuel cap allows air in (otherwise, the fuel pump would either crush the tank as it emptied, or more likely, would eventually not be able to pump against the vacuum). It does not allow fumes (or any gas) out; that's what goes to the evap canister. So you should hear fumes escaping, not sucking, as the tank is lightly pressurized by the evaporating fuel. Of course, what you describe as a "sucking sound" might be fumes escaping.
Well it looks like I'll have to pay more attention to it next time.
Old 10-06-2013, 05:41 PM
  #19  
Registered User
Thread Starter
 
briholt's Avatar
 
Join Date: Mar 2009
Location: just north of seattle, wa
Posts: 183
Received 0 Likes on 0 Posts
I was backwards, it was pressurized

I had it backwards. checked again today and it was pressurized, not a vacuum.

Originally Posted by scope103
Sucking? That's bad. The "vented" fuel cap allows air in (otherwise, the fuel pump would either crush the tank as it emptied, or more likely, would eventually not be able to pump against the vacuum). It does not allow fumes (or any gas) out; that's what goes to the evap canister.

So you should hear fumes escaping, not sucking, as the tank is lightly pressurized by the evaporating fuel.

Of course, what you describe as a "sucking sound" might be fumes escaping.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Eggslinger
86-95 Trucks & 4Runners
22
06-08-2019 03:32 PM
raptor510
86-95 Trucks & 4Runners
18
08-19-2015 02:15 PM
JustToynAround
86-95 Trucks & 4Runners
3
08-19-2015 11:46 AM
socasml
86-95 Trucks & 4Runners
1
08-08-2015 12:46 PM
pyramid
86-95 Trucks & 4Runners
10
07-30-2015 10:05 AM



Quick Reply: Anyone smelled gas after spinning out?



All times are GMT -8. The time now is 04:24 PM.