HELP NEEDED! I can never fill up the tank at once. Should I let it be? ill effects?

[autoque]

The 08' 3.0 X5 has been having this problem since new, right off the dealer lot.

I fill up the gas tank till the pump clicks. I start the car and see the gauge a bar less than full (a small bar). So I get out and pump again, click after click, about one and a half gallon more goes in. I go back and start the car again and see the bar at full.

That's the ritual I go though at every gas station. The car went in for service but the tech told me to fill up the car slower so gaseous air would have time to ventilate. In short, don't use the pump at full power. The tech didn't have permanent fix for it and I didn't push it.

The car's still under warranty but I think it's not a big deal so I'm willing to just let this one go. But will it have a negative impact on performance? The pressure in the gas tank might be off due to faulty ventilation. Or is it? I'm not sure in the long run if this will haunt me back as a performance lag or lower reliability. Or if it's just a small annoyance which has no other ill effects. Any help is greatly appreciated.

[genemish]

i have same result (2010 X5 4.8) ONLY when the car is running during the fill up...

[Jeg Norge]

Originally Posted by genemish

i have same result (2010 X5 4.8) ONLY when the car is running during the fill up...

we can do that??? refuel with engine on???!?!?!!

[JCL]

Originally Posted by Jeg Norge

we can do that??? refuel with engine on???!?!?!!

NO

[autoque]

Originally Posted by JCL

Your initial post said (as I read it) that the gas station pump switched off before the tank was full. The tank wasn't full, and the gauge didn't read full. If you topped it off manually, the tank was then full, and the gauge read full.

Oh I see. Then there's nothing wrong. Thanks.

[genemish]

Originally Posted by Jeg Norge

we can do that??? refuel with engine on???!?!?!!

Flame all you want, I do it all the time and don't see what the big deal is..

[JCL]

Originally Posted by genemish

Flame all you want, I do it all the time and don't see what the big deal is..

Not a big deal at all, just unsafe, illegal, and can throw codes. But if running your engine is more important than all that, go for it. You must be that guy at the centre of the universe I've heard so much about.

Personally, I ask other drivers to turn their engines off if they are running them while refueling. If they refuse, I can hit the emergency stop button, shut down all the pumps, and blame it on them.

I have a family member who works for an oil company, and is often on retail site visits. They hit the same emergency stop switch in that circumstance.

[ard]

Originally Posted by JCL

Not a big deal at all, just unsafe, illegal, and can throw codes. But if running your engine is more important than all that, go for it. You must be that guy at the centre of the universe I've heard so much about.

Personally, I ask other drivers to turn their engines off if they are running them while refueling. If they refuse, I can hit the emergency stop button, shut down all the pumps, and blame it on them.

I have a family member who works for an oil company, and is often on retail site visits. They hit the same emergency stop switch in that circumstance.

Sweet.

[NewGTGuy]

Originally Posted by genemish

Flame all you want, I do it all the time and don't see what the big deal is..

Seriously? You don't see the problem with exposing a highly flammable liquid to oxygen and potential static electricity?

YouTube - Running Car Catches Fire at Gas Pump

Yes a running car does cause static electricity.... I know it's hard to believe...

Come on man....

[Thunder22]

Originally Posted by genemish

Flame all you want, I do it all the time and don't see what the big deal is..

The fact that you don't see a problem, IS the problem.