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12-10-2023LAST POST
I have 08 E92 M3, and there are several issues with the car and I would like to address all of them and maybe get some solutions!


1. Coolant Leak?

The water coolant is going empty fast, like full to warning indicator in 3 days. There is no leak and I recently changed the cap to OEM one. btw there is no leak. I searched the forum and someone told me to tighten the screw next to the radiator and it would make it better, but I'm not sure if it solved the problem.



2. cracking noise while driving/sitting in the car?

As soon as I get into the car, it doesn't matter if the car is on or off, it makes this loud cracking noise within the cabin. When it makes the noise, it mutes the sound of the car for 4~5 seconds. (this sound includes BMW notification chime to music). I'm not sure what is causing this, I will record the sound and post it here. Noise happens randomly and it happens while the door is open as well.

cracking noise.


3. smells like gasoline near the car

Every time I get in and out of the car, I smell gasoline. I thought I spilled some gas while fueling, but I looked up the forum and this is a common issue with the e9x 3 series with the fuel pump.

I smell gas from both the driver and passenger side (not within the cabin though, only from the outside when I get in and out of the car), The fuel pump is located to the right, is swapping out the fuel pump fix the issue?

reference
https://www.m3post.com/forums/showthread.php?t=1862715



Thank you for reading my post! :thumsup:
Gas smell- pull up the rear seat and remove the 10mm bolts securing the fuel pump cover on the passenger side and the fuel sender cover on the driver side. Both include fuel line connections with brittle plastic. If one of these was leaking it would drip down to the ground and you wouldn’t smell anything in the cabin because of the sealed covers. That’s where I would start my inspection. From there, you would need to put the car on jack stands or a lift and follow the fuel line to the engine compartment.