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VS V6 Drinking fuel and hesitation when accelerating.

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by VZ57SSZ, May 23, 2011.

  1. May 23, 2011 #1
    VZ57SSZ

    VZ57SSZ Member

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    Hey guys

    Just this week my VS has started to drink fuel, every-time I get out of the car there is a strong fuel smell from the Exhaust.

    Also when you give it a little throttle to overtake or get up to speed it hesitates and doesn't backfire but makes a noise like bom bom bom from the exhasut and then it takes off.

    It has used more then three quarters of a tank in less then a week. What could be the cause of the problem?

    Thanks
     
    VZ57SSZ, May 23, 2011
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  2. May 23, 2011 #2
    db_notso

    db_notso diagnostic technician...

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    well if you can smell fuel (dont assume from exhaust gasses)
    i would get a torch and check around fuel tank to fuel filter for leaks (wet patches at connections or lines or tank edge)
    also around fuel rail on engine including fuel pressure regulator....
     
    db_notso, May 23, 2011
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  3. May 23, 2011 #3
    VZ57SSZ

    VZ57SSZ Member

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    I have checked for leaks and visually I couldn't see anything.

    I just had a mate give it a rev while I was behind it and smells like its over-fueling as the smell was very strong after a few small revs.
     
    VZ57SSZ, May 23, 2011
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  4. May 23, 2011 #4
    hako

    hako Donating Member

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    hako, May 23, 2011
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  5. May 23, 2011 #5
    SP00KSTER

    SP00KSTER New Member

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    if your car is running rich then it could be a sensor problem, do a error code check and see if anything comes up.
    also i have noticed that my ute has the smell of unburnt fuel coming out of the exhaust but i know that it has a miss fire which is why i get the smell, check all your plugs for color if any of them look kinda black or different to the rest then it could be a cylinder that's not firing.
     
    SP00KSTER, May 23, 2011
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  6. May 23, 2011 #6
    VZ57SSZ

    VZ57SSZ Member

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    Yeah it is more of a egg smell, not raw fuel, I got code code 76 (Fuel varation left - right banks) which has appeared many times, but the hesitation and heavy use has only started this week.

    I will check plugs tomorrow.
     
    VZ57SSZ, May 23, 2011
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  7. May 23, 2011 #7
    db_notso

    db_notso diagnostic technician...

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    i agree bad smell hesitation no leaks of fuel

    check for a misfire, put car in drive foot on brake and half accelerate if it shudders you have a missfire
     
    db_notso, May 23, 2011
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  8. May 23, 2011 #8
    VZ57SSZ

    VZ57SSZ Member

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    Thanks for help, I will try the Brake and Accelerate test tomorrow.
     
    VZ57SSZ, May 23, 2011
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  9. May 23, 2011 #9
    hako

    hako Donating Member

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    Might also pay to check the coolant temp sensor - it may be telling the ECU that the engine is cold when it's really hot - this causes a rich mixture and can also cause the code 76. The test suggested above is a good one.
     
    hako, May 23, 2011
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  10. May 23, 2011 #10
    ben315vz

    ben315vz Donating Member

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    Sounds like the spark plugs or leads to me. When was the last time it had a tune up?
     
    ben315vz, May 23, 2011
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