LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Intense gas odor when heater is on.

Thread Tools
 
Search this Thread
 
Old 11-28-2012, 08:37 PM
  #1  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default Intense gas odor when heater is on.

My fuel lines are good. I see sweat around different components. My guess is the charcoal canister. Just where is it? Unless I'm wrong. Happen to anyone else? Oh 94 formula
Old 11-28-2012, 08:40 PM
  #2  
TECH Junkie
iTrader: (22)
 
camar0corey's Avatar
 
Join Date: May 2006
Location: Spring Hill, FL
Posts: 3,975
Likes: 0
Received 2 Likes on 2 Posts

Default

Charcoal canister is in the back of the car, have to loosen up the inner fender liner back there, driver side. I deleted mine for weight a few months back, just stuck a filter on the line.
Old 11-28-2012, 09:13 PM
  #3  
TECH Fanatic
iTrader: (15)
 
nomoneyz's Avatar
 
Join Date: Aug 2006
Location: Apple Valley - So Cal
Posts: 1,458
Received 1 Like on 1 Post

Default

Do you overfill your gas tank? Like after it clicks off do you keep trying to pump more?
Old 11-28-2012, 10:11 PM
  #4  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

But the odor is coming in when the heater is on. So the car stinks when I'm on warming up in the a.m.. I guess before I went digging around. Wanted to see if anyone else has had this happen or what could be around that to cause that.
Old 11-28-2012, 10:14 PM
  #5  
TECH Junkie
iTrader: (34)
 
SoxXpupPeT's Avatar
 
Join Date: May 2008
Location: Yonkers, NY
Posts: 3,432
Received 1 Like on 1 Post

Default

Stupid question but; do you have any exhaust leaks? Cars run richer at cold start up and might be smelling the unburnt fuel in the exhaust.
Old 11-28-2012, 10:16 PM
  #6  
Staging Lane
iTrader: (1)
 
Mike.'s Avatar
 
Join Date: Jun 2012
Location: Jacksonville, Fl
Posts: 72
Likes: 0
Received 0 Likes on 0 Posts
Default

Not completely sure if yours looks like this being that it's a 94, but if it does, check the evap purge solenoid. It's not supposed to open until the car is warm but if the canister breaks up the little bits of charcoal can keep it open.



http://shbox.com/1/evap_sol.jpg
Old 11-28-2012, 11:10 PM
  #7  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

I'll have to check that. It's not a super big deal to me. It's that I take my 2 year old to daycare in the morning at well you get it. Stupid question. But is it repairable or would have to replace?
Old 11-28-2012, 11:13 PM
  #8  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

Plus I may have a leak. Putting headers on soon and I know my cat is toast do to rattle. Which I'm sure I'm getting restriction somewhere. Lol
Old 11-28-2012, 11:20 PM
  #9  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

Oh plus may be related or may not. But during cold cycle. Sometimes I get a backfire pop almost. Almost like I'm to advanced in timing. But there has been no changes to my ecu settings. Temp sensor?
Old 11-28-2012, 11:29 PM
  #10  
Staging Lane
iTrader: (1)
 
Mike.'s Avatar
 
Join Date: Jun 2012
Location: Jacksonville, Fl
Posts: 72
Likes: 0
Received 0 Likes on 0 Posts
Default

No check engine light or anything?
A temp sensor can definitely cause a host of problems. I had an intermittent cranking issue I was chasing forever and it was that sensor.

If the solenoid is clogged you can blow it out with compressed air. If it has charcoal in it that means you need to replace the canister though.
Old 11-29-2012, 12:31 AM
  #11  
TECH Regular
 
StraightTimeStirrups's Avatar
 
Join Date: Dec 2011
Posts: 477
Received 0 Likes on 0 Posts

Default

Is your car outside or in a garage when you smell this? If your Cat is near gone, its going to smell like its running pig rich and smell like fuel. I dont know how old you are but in the old days that is the way cars smelled! I dont have a Cat on my race car and it smells rich when I start it up first thing.

Joe
Old 11-29-2012, 05:08 AM
  #12  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

32 my man. Parked outside. My truck has no cats and 3" straight pipe and I don't smell that. But I see what your saying. Thanks for the heads up. I guess its stuff I was guessing on. Just needed confirmation. Oh and no engine light.
Old 11-29-2012, 07:14 AM
  #13  
TECH Veteran
 
shbox's Avatar
 
Join Date: Dec 2008
Location: Little Rock, AR
Posts: 4,122
Received 51 Likes on 45 Posts

Default

Is it raw fuel or is it exhaust fumes? Raw fuel means you have a fuel leak. Exhaust fumes means you have an exhaust leak.
Old 11-29-2012, 08:37 AM
  #14  
TECH Addict
iTrader: (1)
 
jaycenk's Avatar
 
Join Date: Jun 2009
Location: Holiday, FL
Posts: 2,210
Received 1 Like on 1 Post

Default

If it's raw fuel you smell take a flash light and check the Fuel regulator at the back of the engine. When mine went bad it leaked fuel out of the regulator housing and down on to the transmission bell housing.
Old 11-29-2012, 10:01 AM
  #15  
On The Tree
Thread Starter
 
czechnuts's Avatar
 
Join Date: May 2010
Location: Vancouver,WA
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts

Default

Oh no. Smells stale. But fresh..if that makes sence. My car has almost 200k on it. So I'm sure it could be a few things. Lol



Quick Reply: Intense gas odor when heater is on.



All times are GMT -5. The time now is 10:03 AM.