Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Raw gas smell when driving a little hard.

Thread Tools
 
Search this Thread
 
Old Oct 27, 2018 | 10:47 AM
  #1  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default Raw gas smell when driving a little hard.

So i just only started noticing how strong this is but if im coming home from work and say i take a turn a little to quickly or brake suddenly like a light turns yellow and thinking about ramming down on the gas pedal but then see that magical state trooper badge on the other side and slam on the brakes instead. I smell raw gas and i been kinda poking around and cant seem to find out where its supposedly leaking from. I lowered the gas tank and looked around the lines and the fuel pump seal and even touched around and all is squeaky clean and try and my fingers dont smell like gas at all. and thats where the smell is the strongest. I swear i dont have a leak in my gas tank as i looked at every part and its dry but yet again strong smell of gas. Where else can i look and what else am i missing. I traced the lines back to the engine bay and theyre dry and not rusted or anything.
Reply
Old Oct 27, 2018 | 11:49 AM
  #2  
OldTires's Avatar
Senior Member
 
Joined: Mar 2014
Posts: 952
Likes: 55
From: Eastern Long Island, NY
Year: 1996
Model: Cherokee
Engine: I6 Cyl / 4L
Default

Filler hoses maybe? Mine were cracking when I changed them a few years ago. Then I would check the fuel filter and all those connections.

But the slamming the breaks when about to get going suggests either the gasoline slams in the tank and is seeping out of somewhere. Or the injectors are primed and then some gas leaks from an oring. But you smell nothing in the engine bay?
Reply
Old Oct 27, 2018 | 01:03 PM
  #3  
BimmerJeeper's Avatar
Banned
 
Joined: Oct 2012
Posts: 1,744
Likes: 2
From: USA
Year: 1998
Model: Cherokee
Engine: 4.0L i6
Default

Check this. One is under the driver's door, the other is in the front part of the engine. See link inside link
https://www.cherokeeforum.com/f2/hel...nector-215310/
Reply
Old Oct 27, 2018 | 01:55 PM
  #4  
DustyWagoneer's Avatar
Senior Member
 
Joined: Mar 2018
Posts: 660
Likes: 300
From: Under the Jeep
Year: 1993
Model: Cherokee (XJ)
Engine: 2.9 Stroker 4cyl
Default

Originally Posted by EEVEE
So i just only started noticing how strong this is but if im coming home from work and say i take a turn a little to quickly or brake suddenly like a light turns yellow and thinking about ramming down on the gas pedal but then see that magical state trooper badge on the other side and slam on the brakes instead. I smell raw gas and i been kinda poking around and cant seem to find out where its supposedly leaking from. I lowered the gas tank and looked around the lines and the fuel pump seal and even touched around and all is squeaky clean and try and my fingers dont smell like gas at all. and thats where the smell is the strongest. I swear i dont have a leak in my gas tank as i looked at every part and its dry but yet again strong smell of gas. Where else can i look and what else am i missing. I traced the lines back to the engine bay and theyre dry and not rusted or anything.
I have had this very problem for a while as well.
For the life of me everything looked fine, and could not find any leaks.
A couple weeks ago when I was installing my new XRC rear bumper, I noticed where the leak was coming from after taking off the shield for the fuel filler hoses.
Those fuel filler hoses get a little brittle, and they do rub on the upper sheet metal. The leak/smell was actually coming from the vent hose.
So I ended up buying both hoses, the fuel tank vent, fuel filter, and a new fuel pump system from rock auto.
I figured since the Jeep has 184K on the fuel system, might as well drop the tank and do the job right.
Reply
Old Oct 27, 2018 | 06:05 PM
  #5  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default

Found it.... Poking around the filler neck area while having someone rock it the port going into the tank is cracked around the seam so made some epoxy and blapped a bit on there and lookie lookie no more smell.
Reply
Old Oct 28, 2018 | 07:51 AM
  #6  
BimmerJeeper's Avatar
Banned
 
Joined: Oct 2012
Posts: 1,744
Likes: 2
From: USA
Year: 1998
Model: Cherokee
Engine: 4.0L i6
Default

Can you post a photo where the issue was?
Reply
Old Oct 28, 2018 | 11:11 AM
  #7  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default




Sorry for the bad picture but the red circled part is where i found mine right at the seam on the tank. Must of happened when i manhandled the hose on there after the 3rd fuel pump.
Reply
Old Oct 28, 2018 | 12:21 PM
  #8  
firebane's Avatar
Senior Member
 
Joined: Dec 2017
Posts: 622
Likes: 9
From: Calgary, AB
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
Default

Be warned if your fuel has ethanol that epoxy won't last long.
Reply
Old Oct 28, 2018 | 03:30 PM
  #9  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default

Thanks! well crap oh well itll hold for now lol. What else could i have used?
Reply
Old Oct 28, 2018 | 03:44 PM
  #10  
dave1123's Avatar
Old fart with a wrench
 
Joined: Nov 2010
Posts: 14,398
Likes: 741
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Default

Holy crap! A steel tank! That's on a 99? My 2000 is plastic! Built 3-00.
Reply
Old Oct 28, 2018 | 07:48 PM
  #11  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default

Originally Posted by dave1123
Holy crap! A steel tank! That's on a 99? My 2000 is plastic! Built 3-00.
Nope lol sorry was an example and the cleanest picture i could get that shows where its cracked. Im to lazy to pull the cover back off and snap a picture lol.
Reply
Old Oct 29, 2018 | 03:37 AM
  #12  
Ralph77's Avatar
CF Veteran
10 Year Member
 
Joined: Oct 2015
Posts: 7,519
Likes: 1,629
Year: 2000
Model: Cherokee (XJ)
Default

Originally Posted by EEVEE
Thanks! well crap oh well itll hold for now lol. What else could i have used?
I know we sell a fair amount of this at the store to a company that owns big dump trucks hauling gravel and whatnot. Guessing it does what they need it to do cause they keep buying it.

https://www.napaonline.com/en/p/BK_7651546

Seems like it might only be for metal tanks though.
Reply
Old Oct 29, 2018 | 04:44 PM
  #13  
BimmerJeeper's Avatar
Banned
 
Joined: Oct 2012
Posts: 1,744
Likes: 2
From: USA
Year: 1998
Model: Cherokee
Engine: 4.0L i6
Default

You fixed this while laying under the car?
Reply
Old Oct 29, 2018 | 05:58 PM
  #14  
EEVEE's Avatar
Thread Starter
CF Veteran
10 Year Member
 
Joined: Apr 2014
Posts: 1,181
Likes: 60
From: Florida
Year: 1999
Model: Cherokee
Engine: 4.0l
Default

Somewhat. I pulled it out a little to get better access.
Reply
Old Mar 29, 2020 | 04:03 AM
  #15  
Sami Sayegh's Avatar
Newbie
 
Joined: Mar 2020
Posts: 1
Likes: 0
Model: Cherokee (XJ)
Default Misfire

Been trying to figure ut why my 2007 jeep grand Cherokee laredo 4.7l flex v8 beenmisfiring. Replaced spark plugs also o rings on fuel injectors. Found some hairline cracks on the injectors. In process of replacing. Also waiting on new coil packs. At times when I take my foot of the gas t seems like jeep still accelerating? Any idieas?.
also wait liquid coming out of exhaust.
Reply



All times are GMT -5. The time now is 06:33 AM.