Help me save my M5 F10 (Blueish smoke + Excessive oil Loss)

AnotherM · 07-16-2021, 05:06 PM

Out of curiosity did you replace both PCV hoses with OEM from BMW?

I ask because the crappy little check valves in them are complete crap from anywhere except the dealership. My last car was a 550i with the n63 and i replaced the hoses with ones from amazon only to find that the crank case had excessive vaccum. I noticed this when removing the oil cap and hearing/feeling the vaccum. As soon as i replaced them with ones from the dealership the vaccum was gone.

I mention all that because when the crank was under excess vaccum, i too was seeing smoke with catless downpipes.

Michousa04 · 03-05-2022, 04:13 PM

same issue here oil coming out of the fresh air pipe and turbo exhaust
i have m5 f10 2014 s63
i did a crankcase pressure test and i have -40 MBAR (vacuum)

Megamon21 · 03-18-2023, 12:34 PM

Any one think the oil consumption could be because of the brand type of oil and weight

BMWSauberF1 · 04-07-2023, 03:47 AM

Is it that much smoke because I have a little bit of smoke too running catless your always gonna have a bit more smoke but if it’s that thick blue smoke that gets worse the longer your sitting at a light when you take off again my girl has that issue on her 550i GT I always assumed it was the Pcv valves. Never fixed it she just traded it in. But like I said I get smoke when sitting at a light a little and taking off but nothing like she got on her 550 after sitting for a little while it would have a huge blue cloud and smelled like hella oil.

07-16-2021, 05:06 PM	#23
AnotherM Cole 321 Rep 498 Posts Drives: 2016 m5 CP Join Date: Oct 2020 Location: AZ iTrader: (0)	Out of curiosity did you replace both PCV hoses with OEM from BMW? I ask because the crappy little check valves in them are complete crap from anywhere except the dealership. My last car was a 550i with the n63 and i replaced the hoses with ones from amazon only to find that the crank case had excessive vaccum. I noticed this when removing the oil cap and hearing/feeling the vaccum. As soon as i replaced them with ones from the dealership the vaccum was gone. I mention all that because when the crank was under excess vaccum, i too was seeing smoke with catless downpipes.
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03-05-2022, 04:13 PM	#24
Michousa04 New Member 0 Rep 6 Posts Drives: bmw 528 2011 Join Date: Mar 2015 Location: miami iTrader: (0)	same issue here oil coming out of the fresh air pipe and turbo exhaust i have m5 f10 2014 s63 i did a crankcase pressure test and i have -40 MBAR (vacuum)
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03-18-2023, 12:34 PM	#25
Megamon21 New Member 0 Rep 22 Posts Drives: 2013 BMW m5 Join Date: Aug 2022 Location: Miami iTrader: (0)	Any one think the oil consumption could be because of the brand type of oil and weight
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04-07-2023, 03:47 AM	#26
BMWSauberF1 Private First Class 36 Rep 112 Posts Drives: 2013 BMW M5 Join Date: Jul 2022 Location: San Francisco iTrader: (0)	Is it that much smoke because I have a little bit of smoke too running catless your always gonna have a bit more smoke but if it’s that thick blue smoke that gets worse the longer your sitting at a light when you take off again my girl has that issue on her 550i GT I always assumed it was the Pcv valves. Never fixed it she just traded it in. But like I said I get smoke when sitting at a light a little and taking off but nothing like she got on her 550 after sitting for a little while it would have a huge blue cloud and smelled like hella oil.
	Appreciate 0 Quote