Could a bad PCV Hose causing white smoke? HELP

lukemcmullen45 · 01-30-2020, 11:31 AM

My PCV Hose cracked and broke while I was doing the VCG. I made the mistake of buying a no-brand PCV Hose on Amazon. The part seemed fine, fitment was pretty bad and I had to actually heat it up so i could bend it and so it could fit.

I’ve been having problems with white smoke on startup and sometimes when I rev the engine. Could this be caused by a bad or crappy PCV hose? I was thinking it couldn’t hurt to replace it and see, if there’s even a slight possibility that this is what is causing my white smoke.

White smoke appeared about 500 miles after replacing the PCV Hose.

Thanks for any help!
- Luke

Sgop335 · 01-30-2020, 08:32 PM

The pcv hose is a simple bi directional flapper valve. It flows 3:1 or something like that. Guess the aftermarket part can screw that? The original part is quite inexpensive...

335iN54enthusiast · 02-15-2020, 01:23 PM

Check out my channel and video on smoking N54s maybe it will help.

01-30-2020, 11:31 AM	#1
lukemcmullen45 Luke McMullen 29 Rep 114 Posts Drives: 2007 BMW 335i Coupe Join Date: Jun 2019 Location: Santa Clarita, CA iTrader: (0)	Could a bad PCV Hose causing white smoke? HELP My PCV Hose cracked and broke while I was doing the VCG. I made the mistake of buying a no-brand PCV Hose on Amazon. The part seemed fine, fitment was pretty bad and I had to actually heat it up so i could bend it and so it could fit. I’ve been having problems with white smoke on startup and sometimes when I rev the engine. Could this be caused by a bad or crappy PCV hose? I was thinking it couldn’t hurt to replace it and see, if there’s even a slight possibility that this is what is causing my white smoke. White smoke appeared about 500 miles after replacing the PCV Hose. Thanks for any help! - Luke
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01-30-2020, 08:32 PM	#2
Sgop335 Colonel 648 Rep 2,011 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	The pcv hose is a simple bi directional flapper valve. It flows 3:1 or something like that. Guess the aftermarket part can screw that? The original part is quite inexpensive... __________________ 335i e92 TPC 19Ts
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02-15-2020, 01:23 PM	#3
335iN54enthusiast Banned 15 Rep 46 Posts Drives: Bmw 335i Join Date: Aug 2019 Location: Niagara falls Canada iTrader: (0)	Check out my channel and video on smoking N54s maybe it will help.
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