PCV Valve and Vent Hose

AZBimmer · 02-13-2017, 02:28 PM

After reading on this forum I thought I would try RB PCV and Cover and replace PCV Vent hose to try and fix smoking on decel issue. There was oil in the Vent hose on both ends, not sure if that's normal. My question is once I have replaced the parts should the car still smoke for a few days? Is the residual oil burning off or was the PCV Valve and Vent hose not the solution. Car is N54. Thanks.

philtr · 02-13-2017, 02:59 PM

Quote:

Originally Posted by AZBimmer

After reading on this forum I thought I would try RB PCV and Cover and replace PCV Vent hose to try and fix smoking on decel issue. There was oil in the Vent hose on both ends, not sure if that's normal. My question is once I have replaced the parts should the car still smoke for a few days? Is the residual oil burning off or was the PCV Valve and Vent hose not the solution. Car is N54. Thanks.

It's normal to have oil in the PCV hose. You may want to try installing a catch can setup to help remove the oil before it's circulated back into the engine. How much smoke are you getting and is it only after a hard pull or most of the time on decel?

AZBimmer · 02-13-2017, 03:20 PM

It smokes on first decel after start up. Then is fine the rest of the time even WOT.

335e92tx · 02-13-2017, 05:28 PM

How many miles on it? It might require a good IC and CP clean to really get rid of things. I just replaced my vent tube and PCV with RB also, but I wasn't getting smoke. A little oil spray in the VC area after 125K miles (110K juiced)

AZBimmer · 02-13-2017, 06:06 PM

83,000. I will try cleaning ic and charge pipe and see if that helps thanks

Supra2k6 · 02-21-2017, 04:49 PM

found anything i'm getting smoke on decel after inlet install. car pulls strong doubt its my turbos. low miles as well

madmantwo · 02-21-2017, 06:05 PM

Quote:

Originally Posted by Supra2k6

found anything i'm getting smoke on decel after inlet install. car pulls strong doubt its my turbos. low miles as well

I had really bad smoke on decel and when driving in traffic at low RPMs (1000-1500). My turbos felt strong, but one of them was leaking badly. Replaced turbos and now I have no more smoke. Not saying that's your problem but don't rule out turbos yet

AZBimmer · 02-21-2017, 08:51 PM

Smoking has greatly reduced since I replaced pcv and Vent hose. Getting transmission service done Friday at Indy Shop and am having them take a look. I will let you know what I find out.

SONO_N54 · 04-03-2017, 11:47 AM

Updates?

AZBimmer · 04-03-2017, 01:42 PM

Still smoking so I replaced the Valve Cover and gasket this weekend and will know more when I put a few miles on it. If it's still smokes after that then I will pull DP's and check turbos. Car has 85,000 miles on it and tuned since 40,000.

02-13-2017, 02:28 PM	#1
AZBimmer Private 11 Rep 97 Posts Drives: 2009 FBO E90 N54 Cobb E30 Join Date: Nov 2012 Location: Phoenix, AZ iTrader: (0)	PCV Valve and Vent Hose After reading on this forum I thought I would try RB PCV and Cover and replace PCV Vent hose to try and fix smoking on decel issue. There was oil in the Vent hose on both ends, not sure if that's normal. My question is once I have replaced the parts should the car still smoke for a few days? Is the residual oil burning off or was the PCV Valve and Vent hose not the solution. Car is N54. Thanks.
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02-13-2017, 03:20 PM	#3
AZBimmer Private 11 Rep 97 Posts Drives: 2009 FBO E90 N54 Cobb E30 Join Date: Nov 2012 Location: Phoenix, AZ iTrader: (0)	It smokes on first decel after start up. Then is fine the rest of the time even WOT.
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02-13-2017, 05:28 PM	#4
335e92tx ahat 1036 Rep 2,592 Posts Drives: Was '07-335e92 - Now '13-335IS Join Date: Mar 2008 Location: Texas iTrader: (6)	How many miles on it? It might require a good IC and CP clean to really get rid of things. I just replaced my vent tube and PCV with RB also, but I wasn't getting smoke. A little oil spray in the VC area after 125K miles (110K juiced) __________________ '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- Grey interior (1 of 24 in LMB with any trans- 1 of 14 with DCT)-MODS -MFactory LSD/MHD-BQ custom Tune/ATM-IC/AFE Momentum GT Intake/Konis/Mfront&HeimJoint Rear rods&arms/Brembos. https://photos.app.goo.gl/Lo6aHZRo7XqtPkhL8
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02-13-2017, 06:06 PM	#5
AZBimmer Private 11 Rep 97 Posts Drives: 2009 FBO E90 N54 Cobb E30 Join Date: Nov 2012 Location: Phoenix, AZ iTrader: (0)	83,000. I will try cleaning ic and charge pipe and see if that helps thanks
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02-21-2017, 04:49 PM	#6
Supra2k6 Lieutenant 132 Rep 573 Posts Drives: 335i Join Date: Dec 2013 Location: The District iTrader: (1)	found anything i'm getting smoke on decel after inlet install. car pulls strong doubt its my turbos. low miles as well
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02-21-2017, 08:51 PM	#8
AZBimmer Private 11 Rep 97 Posts Drives: 2009 FBO E90 N54 Cobb E30 Join Date: Nov 2012 Location: Phoenix, AZ iTrader: (0)	Smoking has greatly reduced since I replaced pcv and Vent hose. Getting transmission service done Friday at Indy Shop and am having them take a look. I will let you know what I find out.
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04-03-2017, 11:47 AM	#9
SONO_N54 Private 33 Rep 45 Posts Drives: 2007 BMW E90 335i Join Date: Oct 2015 Location: Chesapeake, VA iTrader: (0)	Updates?
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04-03-2017, 01:42 PM	#10
AZBimmer Private 11 Rep 97 Posts Drives: 2009 FBO E90 N54 Cobb E30 Join Date: Nov 2012 Location: Phoenix, AZ iTrader: (0)	Still smoking so I replaced the Valve Cover and gasket this weekend and will know more when I put a few miles on it. If it's still smokes after that then I will pull DP's and check turbos. Car has 85,000 miles on it and tuned since 40,000.
	Appreciate 0 Quote