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-   -   Vacuum like noise from left back tire (http://www.bimmerfest.com/forums/showthread.php?t=645580)

amar3690i 09-13-2012 12:35 PM

Vacuum like noise from left back tire
 
Hi guys, the other day I was running out of fuel and then I heard a vacuum like noise coming out of the drivers rear Tire side.
I filled the car up with some fuel N It was gone.
Can anyone help

Yorgi 09-13-2012 04:53 PM

If I had to guess...there is a fan in the trunk behind the liner on the drivers side. This cools the amps for the stereo and it is pretty loud when it's running.

amar3690i 12-01-2012 10:51 AM

No man, it's not that, I guess it's the gas pump, it's because of using crappy gas. My friend advised me to use only chevron, and now after about refilling from chevron for about four times, the problem is solved,
I guess there was some debris that were in the gas pump. Now that I used chevron, it cleaned it. Now I understand why chevron is more expensive!!!!

Yorgi 12-01-2012 12:27 PM

Let me guess, your friend works for Chevron. :)

Good gas is important though. I've seen bad gas put a few cars and even a BMW motorcycle into limp mode.

amar3690i 12-01-2012 12:58 PM

Lol, no he doesn't, he had the same problem, after a while his gas pump blew. However his wasn't a bmw.....

Nitrogen 12-01-2012 01:07 PM

I think the pump is in the tank and if it is when your fuel level gets really low the pump is not fully submersed in fuel so it sounds noisy. When you have plenty of fuel the sound isn't bad because the tank is not empty. I doubt the chevron fuel has anything to do with the noise.
Also it is good practice to never let your tank level to go less than 1/4. The fuel also acts as a coolant to cool the pump if you always drive near empty the pump has a tendency to always run hot and will eventually overheat and go out.

Mulchman 12-03-2012 11:21 AM

Chevron gas on the left coast has Techtron in it. That is why it is more expensive and widely recommended in CA. They have so many stupid rules about gas that the typical stuff will ruin a high performance car. The max octaine in CA is 91.


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