Quick advice please.....

jmr0311 · 05-12-2015, 05:55 PM

I will like to hear some of you guys take on this. I've this happen to me in other vehicles too. When I punch the gas during a hard acceleration on my M235i, the cabin gets exhaust fumes. How can that be? I had the windows up and the A/C ON.

Is there Anything I should look for that could cause this or I'm just worrying too much about nothing.

overcoil · 05-12-2015, 08:15 PM

First thing is get a carbon monoxide in car detector - the non electric button type.
I find it hard to believe your getting CO in a new car or exhaust fumes of any kind.
Phantom cigarette odors are not so unusual so other types of phantom odors may be the issue and not actual dangerous defect.

jmr0311 · 05-12-2015, 09:57 PM

I was just thinking like a loose exhaust pipe. I have the MP exhaust on my M235i.

overcoil · 05-13-2015, 06:56 AM

If you have the MPE then go to dealer they would use a wand sensor around clamp to find leakage
But I would guess to get leakage into cabin as u describe the leak might have to be near the manifold upfront of the bulkhead and idle would be when the odor is worst / but pressure during acceleration could conceivably have the results you describe.

05-12-2015, 05:55 PM	#1
jmr0311 Lieutenant 248 Rep 430 Posts Drives: 22' G82Cx Velvet Blue Join Date: Jan 2014 Location: San Antonio iTrader: (0)	Quick advice please..... I will like to hear some of you guys take on this. I've this happen to me in other vehicles too. When I punch the gas during a hard acceleration on my M235i, the cabin gets exhaust fumes. How can that be? I had the windows up and the A/C ON. Is there Anything I should look for that could cause this or I'm just worrying too much about nothing.
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05-12-2015, 08:15 PM	#2
overcoil Major General 3074 Rep 5,577 Posts Drives: M235i 6spd Join Date: Dec 2013 Location: Mid-Atlantic iTrader: (0)	First thing is get a carbon monoxide in car detector - the non electric button type. I find it hard to believe your getting CO in a new car or exhaust fumes of any kind. Phantom cigarette odors are not so unusual so other types of phantom odors may be the issue and not actual dangerous defect.
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05-12-2015, 09:57 PM	#3
jmr0311 Lieutenant 248 Rep 430 Posts Drives: 22' G82Cx Velvet Blue Join Date: Jan 2014 Location: San Antonio iTrader: (0)	I was just thinking like a loose exhaust pipe. I have the MP exhaust on my M235i.
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05-13-2015, 06:56 AM	#4
overcoil Major General 3074 Rep 5,577 Posts Drives: M235i 6spd Join Date: Dec 2013 Location: Mid-Atlantic iTrader: (0)	If you have the MPE then go to dealer they would use a wand sensor around clamp to find leakage But I would guess to get leakage into cabin as u describe the leak might have to be near the manifold upfront of the bulkhead and idle would be when the odor is worst / but pressure during acceleration could conceivably have the results you describe.
	Appreciate 0 Quote