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Gas smell

Discussion in 'Wrangler YJ (1986-1995)' started by harrynw, Oct 30, 2016.

  1. Oct 30, 2016 at 12:26 AM
    #1
    harrynw

    harrynw [OP] Member

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    Just got a 91. I've had three Broncos, but I am new to Jeeps. When I got back from test driving it I smelled gas at the back. The seller said there was a vent behind the filler, and that was were the smell was coming from. We took a long ride with it yesterday with the back curtain up, and smelled gas fumes from time to time all day. I don't know if it is from this vent or just rich exhaust fumes blowing in.
    Any thoughts?
     
  2. Oct 30, 2016 at 7:48 AM
    #2
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    By "back curtain" are you referring to the rear window on a soft top? If so, being new, you should know that you should not run with the side windows on and the back windows up or off. The fumes will come in the back like the exhaust is run directly in the cab. Also...do not top off the fuel tank. You know...where you put in every ounce you can get to go in...do not do that. Stopping on the first click of the filler handle is best practice.

    You may wish to check that your fuel overflow hose (that vent behind the filler) is still in good condition and attached properly just to be sure, though.
     
    Mr_Sebas and OFFGRID like this.
  3. Oct 30, 2016 at 8:43 AM
    #3
    harrynw

    harrynw [OP] Member

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    Thanks for your reply. We had the front windows down, and the smell wasn't bad. The previous owner told me he had replaced the thermostat with a 170 from the 195. From what I have been reading, that can cause the motor to run rich. The heat gauge doesn't get to center, so I am putting a 195 back in.
     
  4. Oct 30, 2016 at 9:16 AM
    #4
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    You may be right about the thermostat. HOWEVER, if you have the side windows on with the rear windows open, the exhaust will come in the back. Having the door windows open will not cure this.

    You don't have to take my word for it (or your own experience with the fumes)...your owner's manual says:

    "On fabric top models, do not drive with the rear window curtain up unless the side curtains are also open. This will prevent carbon monoxide and other poisonous exhaust gasses from entering the vehicle."

    Good luck and wheel safe!!
     
    OFFGRID likes this.
  5. Nov 6, 2016 at 10:11 AM
    #5
    harrynw

    harrynw [OP] Member

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    Ended up being the gas tank had rubbed against the skid plate, and worn a small hole. Now we buy a new gas tank, which for 25 years old isn't bad. It probably has some junk in it anyway. I also fastened back my rear curtain, which of course had one side zipper that has some missing teeth and wouldn't zip down. Another thing to have fixed. The good thing is the 4 wheel works fine, and we have had a couple of nice trips, which made me and the wife happy.
     
    Mr_Sebas and chris4x4 like this.
  6. Nov 7, 2016 at 5:55 AM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Post a write up on how to swap the tank! :)
     
    Mr_Sebas likes this.
  7. Nov 10, 2016 at 7:11 PM
    #7
    C2T

    C2T Well-Known Member

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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,

    Glad you got it figured out.
     
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