Question about 1997 Chevrolet Tahoe

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Bad gas or what, truck wont turn over.

I just watch my local news and found out that a area gas station mistakenly surplied customers with diesel gas while purchasering regular unleaded unforturely i bought some gas from one of the station less than two minutes after pulling off the truck(97 tahoe 5.7) cut off and refused to restart i thought maybe the fuel pump went out, so i replace it. not knowing the gas might be bad i put it back in the truck it started but would not idell correctly,it ran good while driveing but needed the gas pedal press at stops to stay from cuting off. i thought maybe o2 sensors, so i replaceed the down stream one. started it same problem by now the bad gas is gone. so the next day i go to start the truck wiht different gas it wont start. i buy the two more o2 sensors up stream but the truck still wont start any suggestion

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  • yadayada
    yadayada May 11, 2010

    !st off O2 sensors will not cause any kind of rough run just a check engine light, I suggest u get a sample of your fuel out of the tank using the fuel pump, if it smells like paint thinner or after setting has water in it u will need to drain the fuel tank, it sounds like u do have a tank of bad fuel based on the symtoms.

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Fouled plugs this engine hard to start with fouled plugs replace

Posted on Feb 17, 2010

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