VS V6 Drinking fuel and hesitation when accelerating.

[hsv91ss]

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

[db_notso]

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....

[hsv91ss]

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.

[hako]

As above - prob not from exhaust as it would smell of rotten egg gas once it goes thru the catalytic converter. Try a fault code check - Checking error codes VR/VS (Revised)

[SP00KSTER]

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.

[hsv91ss]

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.

[db_notso]

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

[hsv91ss]

Thanks for help, I will try the Brake and Accelerate test tomorrow.

[hako]

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.

[scvs6]

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