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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 04-14-2015, 10:37 PM   #1
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Join Date: Mar 2015
Location: Cincinnati
Posts: 16
My Ride: Soon M3
Fuel smell/leak

So I just got my 2001 M3 and filled the gas tank for the first time. I drive one mile after the fill up and parked. I sat in the car for ten minutes and started smelling a heavy fuel smell. I looked under the car and didn't see any leaking at all. I returned 1 hour later and drove away with a smell when I got into the car. The tank was not 7/8th full... no leaking underneath... I'm confused...
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Old 04-17-2015, 11:19 AM   #2
Zero. Leaks.
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Join Date: May 2008
Location: NYC
Posts: 26,425
My Ride: '02 330i 6MT
Possibly the fuel pump or fuel level sender were replaced and the retaining ring broke (Just happened to my Mercedes last month and there was a strong gas smell in the gas. The retaining ring cracked and the pump was bouncing around allowed the vapors to come from the tank into the cabin)

You will need to remove your rear seats and take a look under the plates held by a few nuts. If everything looks ok then look at your fuel lines under the car.

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Old 04-17-2015, 04:37 PM   #3
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Join Date: May 2014
Location: Sacramento, CA
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My Ride: 05 M3/01 530/04 330
The fuel filler neck is plastic and can crack and seep fuel. Fill to 3/4 next time and see if it does the same thing.
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Old 04-17-2015, 05:04 PM   #4
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My wifes 325is did that. It ended up being the gasket ring around the pump. Filled only about 3/4 and it didnt happen again. Later we got it fixed. Easy diy
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