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Car stalls after gas fill up

Have trouble starting car after fill up, if I leave I running when I fill up then later that day or the next when I stop at a red light it hesitates like it is not getting any power. I have to press the pedal to the floor and after a little while it takes off.

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This is a bit of a tough one and the symptoms are interesting. There isn't anything electrical, inside the gas tank, that will cause these symptoms. I think there is water in the gas tank. Have you pulled the spark-plugs yet? Verify that they are burning clean and do not have a white chalky build-up on them. Does the engine light come on at all? If so, please have them read and forward the codes. There may be a mechanical failure at the engine. Please write back with any new questions or information, good luck.

Posted on Mar 22, 2014

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  • S Williams
    S Williams Mar 22, 2014

    Larry, I have changed the gas cap and put cleaner in tank thinking it was water, the check engine light is on and at one point for awhile today it was flashing. After I stopped the car and let it park for about an hour I started it back up and it has been running fine since. codes said it had a miss

  • S Williams
    S Williams Mar 22, 2014

    The gas cap and cleaner was done weeks ago but did not solve issue.

  • Larry Blais
    Larry Blais Mar 22, 2014

    Injector/fuel cleaner will not help pass water through. Can you confirm that water is or is not present? If water is in the tank, you need to run "Drygas". This will help the water pass through without clogging the fuel filter and the injectors. Your vehicle's only fuel filter is inside the fuel-tank, it is the sock. Your additional information still makes me think that your driveability issue is in the fuel-tank. I'm not positve about it but if, when you have time, please take a look at the plugs. If I'm wrong then at least it will be one more thing that you can cross off the list. Without sounding too preachy, diagnostics will probably be needed to help narrow this search down. but you seem to be on the right track, on your own. But thank you for writing back. If there is anything else that I can do please let me know. Don't worry about writing too much. The more information the better.


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Plugged gas cap vent. try it without screwing the gas cap tight or leave it off. your check engine light might come on but it will go away after you tighten it back down.
get a new gas cap

Posted on Mar 21, 2014


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Posted on Jan 02, 2017

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SOURCE: E85 fuel in a regular gas tank

Siphon out as much of the E85 as you can and fill the tank with good gasoline and drive it like you stole it for a while. You can't drain a tank without removing it and the fuel filter isn't going to catch anything in the E85. This is what I would do anyway.

Posted on Dec 13, 2008

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SOURCE: Hesitation/Backfiring

sound like its flooding

Posted on Feb 15, 2009

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SOURCE: car dies-hard to start

EPC= electronic pedal control it is a sensor and is located in front of the brake pedal . Depress brake with one hand ,the sensor with the other and release fast. this should disengauge the EPC lock listen for a thunk made by the EPC lock disengaging.

Go to auto zone. They will use a code reader to help you find exact component or components having errors. If its not the EPC.
it sounds like your mass air sensor or the throttle control sensor may be bad. Your gas and air may not be mixing properly thus causing your car to sputter, hesitate, and idle rough. It could be some other thinks like a bad plug or wire etc. Good Luck hope this helps. Please rate me if this helps thank you.

Posted on May 15, 2009

  • 2 Answers

SOURCE: car starts fine, but stalls at stops and takeoffs occasionlly

Most likely it is running too ritch. should be around 7%. Mine did ecactly the same thing and I had several things done . Had the throttle body cleaned and installed a O2 senser.runs great now.

Hope this helps

Posted on May 28, 2009

  • 1 Answer

SOURCE: My 87 vw cabriolet will hesitate the stall after warmed up.

I have same problem (87 1.8 Carb Clipper), thought it was rust from fuel tank getting in Carb, changed the tank and fuel filler pipe but still have problem (but not as frequent). I'm gonna get it tuned (mixture and timing etc), also try fuel pump relay and check choke.....fingers crossed.

Posted on Feb 21, 2010

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