'Popping' noise on driver side when going from a stop

Rob_BMW_PNW · 08-27-2016, 10:15 PM

Been happening for a thousand or so miles not, 2011 135i 31k miles.

Ill be at a stop, and just go all normal like, and Ill hear and kind of feel 'popping' from the driver side, like the wheel area.

I did some searching and got a lot of interior glove box on passenger side noise posts, which I have too, but I know what that is.

So last few things I have done to the car, if it may lead to it are: did spark plugs at 30k, had to undo the strut bar to make room to move the cover, and I did SS lines, I noticed that there is 'Styrofoam' near the axle area covered by a undertray? Doubt that is the noise.

My swaybar bushings started to squeak when going over bumps, but I dont think that has anything to do with going straight from a stop?

The pop noises happen, I want to say 50% of the time?

Anything helps, thanks!

iminhell1 · 08-28-2016, 02:48 AM

The SS lines would leave me to believe it's air in a brake line/system.
From what I've read, pressure bleeding is the best option on these cars. nothing else seems to be as reliable.

Rob_BMW_PNW · 08-28-2016, 05:27 PM

Quote:

Originally Posted by iminhell1

The SS lines would leave me to believe it's air in a brake line/system.
From what I've read, pressure bleeding is the best option on these cars. nothing else seems to be as reliable.

My brakes dont goto the floor though? Albeit we did manually bleed them, and it is not something we have done the first time.

The brake pedal and visually not seeing any air bubbles leads me to believe the lines are free of air.

Though, I have read that ABS needs to be 'turned on and off' to do a 'full bleed'

Would it be my ABS for some reason 'popping'?

Having air in my brakes in several other cars/occassions have never made a 'pop noise' the pedal just hits the floor

iminhell1 · 08-28-2016, 07:43 PM

Most cars aren't a 'performance' orientated caliper either.
Air in the caliper can cause one bank of pistons to hang slightly.
I don't know if it's your problem, but I think it's a good place to start.

Rob_BMW_PNW · 08-28-2016, 07:45 PM

Quote:

Originally Posted by iminhell1

Most cars aren't a 'performance' orientated caliper either.
Air in the caliper can cause one bank of pistons to hang slightly.
I don't know if it's your problem, but I think it's a good place to start.

Will check this, thanks. Will probably just bleed the driver side one since that is the side that is having the issue

SabreE82 · 09-29-2016, 11:36 AM

I had a popping noise along with a friend who also has a 135. Both driver side and only form a stop, when turning the steering wheel. Not sure if this is your case. But anywho. It turned out to be that we hadn't tighten the steering rack properly. In my case I had just done inlets. In his, he had been dealing with it for a year since he installed down pipes. Told him about how I simply took the bolts out and re-torques. He went to do it and bam. No more popping noise form either car.

08-27-2016, 10:15 PM	#1
Rob_BMW_PNW Captain 127 Rep 609 Posts Drives: 135i 2011 Join Date: Jan 2016 Location: PNW iTrader: (3)	'Popping' noise on driver side when going from a stop Been happening for a thousand or so miles not, 2011 135i 31k miles. Ill be at a stop, and just go all normal like, and Ill hear and kind of feel 'popping' from the driver side, like the wheel area. I did some searching and got a lot of interior glove box on passenger side noise posts, which I have too, but I know what that is. So last few things I have done to the car, if it may lead to it are: did spark plugs at 30k, had to undo the strut bar to make room to move the cover, and I did SS lines, I noticed that there is 'Styrofoam' near the axle area covered by a undertray? Doubt that is the noise. My swaybar bushings started to squeak when going over bumps, but I dont think that has anything to do with going straight from a stop? The pop noises happen, I want to say 50% of the time? Anything helps, thanks!
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08-28-2016, 02:48 AM	#2
iminhell1 C2H5OH 3915 Rep 2,144 Posts Drives: 2010 SG 135i auto Join Date: May 2015 Location: Darwin, MN iTrader: (1)	The SS lines would leave me to believe it's air in a brake line/system. From what I've read, pressure bleeding is the best option on these cars. nothing else seems to be as reliable.
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08-28-2016, 07:43 PM	#4
iminhell1 C2H5OH 3915 Rep 2,144 Posts Drives: 2010 SG 135i auto Join Date: May 2015 Location: Darwin, MN iTrader: (1)	Most cars aren't a 'performance' orientated caliper either. Air in the caliper can cause one bank of pistons to hang slightly. I don't know if it's your problem, but I think it's a good place to start.
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09-29-2016, 11:36 AM	#6
SabreE82 Private First Class 11 Rep 111 Posts Drives: 2010 Space Grey M-Sport 135i Join Date: Jul 2013 Location: Omaha iTrader: (0)	I had a popping noise along with a friend who also has a 135. Both driver side and only form a stop, when turning the steering wheel. Not sure if this is your case. But anywho. It turned out to be that we hadn't tighten the steering rack properly. In my case I had just done inlets. In his, he had been dealing with it for a year since he installed down pipes. Told him about how I simply took the bolts out and re-torques. He went to do it and bam. No more popping noise form either car.
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