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My car is a standard and whenever I release the gas I hear kind of like a popping type noise.Any ideas on what this could be?

Posted by Anonymous on

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  • Cars & Trucks Master
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This is the excess fuel igniting in the exhaust system
It could be from a faulty mixture setting, incorrect ignition timing, leaking injector or bad valve s and seats
The vacuum goes over 20 inches of mercury on deceleration so weak valve springs will be pulled open on the inlet stroke and any fuel in the manifold will be passed out the open exhaust valve into a hot exhaust
run the fault codes and have a compression test done to determine the engine condition.

Posted on Apr 07, 2015

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Posted on Jan 02, 2017

countrysi248
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SOURCE: Making a rattling noise when i step on the gas.

several things could be wrong are you using 91 octane fuel or less? also it might be a timing issue you might be too far advanced in timing ... this causes preignition.. causing a rattle also cheaper fuel will do the same effect.. thanks Jerry holler if you need more.. also was the noise loud or just a mild noise ??

Posted on Apr 27, 2009

  • 4336 Answers

SOURCE: I have a 2006 X3

Have the exhaust system checked. A small leak can let in air and that air lights gases not yet fully handled by the system.

Posted on May 11, 2011

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There is no other release. Take it to a mechanic or the dealer. Or else just force the door open to reach the cap. Is it just a door cover or the fuel cap itself?

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You might want to check for Technical Service Bulletins that may point you at the answer. You can see the titles of the bulletins for your vehicle at Alldata.com. Try the following link:

http://www.alldatadiy.com/TSB/9860_mo.html

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How do you fill the gas tank?


IM SORRY BUT THAT IS FUNNY.

No seriously now.....if the release in the trunk wont work then the relaese may be stuck, frozen, or broken.

While you are pulling the one in the trunk, you or someone else use something like a small screwdriver to pop the lid open, then leave it open till you find out whats wrong with the release.

By the way, just so you know, those gas doors will not stop anyone from syphoning your gas. A screwdriver will pop that door open in 1/2 second, its more cosmetic and a slight deterent.

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