Question about 1991 Toyota 4Runner

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My 1991 4runner smells like gas while driving and at an idle, Three mechanics have found no leaks. any ideas???

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  • dan Aug 21, 2010

    when is the last time you changed the air filter?


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Check the fuel pump,under hte rear seats,and air flow meter

Posted on Aug 21, 2010

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2001 concorde has strong gas smell while idling and driving and reduced miliage.

Sounds like a leaking fuel injector. Could be facing a under the hood fire in near future if not fixed. Not safe to drive until fixed. Have it towed or hire a mobile mechanic. Don't drive it. Don't start it, unless you know what you're doing.

Oct 11, 2014 | 2001 Chrysler Concorde

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Rough idle smell after stopped running

If you have a strong gasoline smell, get that car into a mechanic ASAP. Forget fooling around trying to discover the problem yourself. Gas explodes, right? You already have a strong smell. That means that somewhere down the fuel system line there is an active leak and that is dangerous. The fact you have to post here means you don't know anything about a car, so stop messing around with a potential lethal problem. I am an old alley mechanic from wayyyyy back and am speaking from experience.

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I have a 2004 Chevy Impala. 3.4l v6. About two months ago, the fuel pressure regulator went out, and I forced it home. My mechanic replaced the fuel pressure regulator and said I had an EGR code, so I...

White smoke and foam in the gas tank indicates antifreeze leaking into the engine somewhere. Do you smell antifreeze? You may have an engine seal leaking, most likely head gasket. It may be affecting the various engine sensors.

Aug 23, 2013 | Cars & Trucks

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We also own a 2005 chevrolet impala with strong gas fumes, inside of the car driving or just idling..also fumes are strong when the car is just idlin. Took it to the mechanic and put the car on the rack,...

I would have someone check under the front of car while engine was running. Maybe then a gas leak could be spotted. Did he check the charcoal canister-it's a gas vapor collector from the gas tank, and maybe located at front of car. If the canister is full and not working to purge the canister and send the collected fuel and vapors into the engine, it might be what you are smelling.

Jan 22, 2013 | 2005 Chevrolet Impala

1 Answer

Fuel sending unit mazda millenia 1998

Well, yes the tank is under pressure at times, but the gauge problem is probably the sending unit.
Every few minutes the computer tries to vent the tank to the vapor canister and the engine which would be affected by the leaking gasket.
You will probably need to replace the sending unit and then you can fix the seal too. Once the seal is disturbed it usually does not fit the hole.

Sep 10, 2012 | 1998 Mazda Millenia

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Runs rough and then smells of gas

Im having a similar problem with my 97 Exlporer, after testing the fuel regulator which was o,k. the holding pressure test failed with fuel found to be leaking into the cylinders and the strong odor of fuel coming out of the exhaust pipe as well as hard starting , and rough idle. I have decided to take the injectors out this weekend for testing. Oh and you will love this, When i took this vehicle to my mechanic, he replaced the head gasket and sent me down the road, i could tell something was wrong after few miles of driving and the nasty smell of gas. He just lost my business, guess i'll just tackle it myself......................

Dec 11, 2011 | 1997 Ford Explorer AWD

1 Answer

I smell strong gas fumes after driving car. How do I find where it's leaking from?

If it is a gas leak and not an exhaust leak, let it sit in park and look under the car for the leak (above and on the floor). At times it is the lines of the sending unit found above the gas tank. Do not drive it! The leak can catch on fire ( the leak can spread over hot parts of the car while driving). If you find the leak, have it towed to your mechanic for repair.

Aug 04, 2011 | 2002 Mercury Sable

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Our 2000 outback has intermittent gas smell when started on cold mornings. Smell in inside the car but gone after driving and warming up the engine. We often go many days with no smell. Our mechanic has...

Fuel Injector might have small leak when cold. The o-ring expands as it cools down and contracts when it heats up. Expansion and contraction. Ive seen it many times on Honda's i don't really work with subaru's that much but its the same concept.

Jan 07, 2011 | Subaru Outback Cars & Trucks

1 Answer

1998 nissan qwest smell gas and rough idle. New plugs, checked fuel pressure, vac hoeses ok.

If your still having the gas smell problem or found a solution to the rough idle problem, contact me at

i solved the gas leak, still searching for cause of rough idle.

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