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#11
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1) buy two new diaphragms with caps. You will break the caps getting them off. 2) remove the old ones and discard. A torn diaphragm will cause this problem too. 3 clean out all the gunk with carb cleaner. Try not to let it run down into the engine. It's not the end of the world though as its volatile and will evaporate out quickly while driving. 4)Make sure that the drain passage is draining. You can pour a little oil into it and see if it goes down. A pipe cleaner might be helpful. 5) clean out the hose that goes to the intake manifold. The fitting is a handy squeeze clip thing. 6) Reassemble. There is a vacuum nipple on the cap that goes no where. It was confusing to me. 7) I emphatically do NOT recommend ever using any stop leak or oil additive products in a tight tolerance engine like this one. The sealing components tend to gum up the important stuff I use only synthetic oil. I like Mobile One 0-40, but there are many good ones. 8) synthetic oil has amazing performance, but will find every possible leak point. That's just going to happen. But an oil leak doesnt hurt anything, other than your driveway. They are usually not worth fixing. They get fixed eventually during a serious repair. Thanks for the good response to my post. Please report back if this works for you so that other owners can benefit from the feedback. Photos are always good too.
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2005 X5 4.4i SterlingGrau, Sport Package, DSP Build 3/12/2005 |
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#12
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I'm definitely going to try this tomorrow now that the pcvs have just arrived. Smoke comes only from the passenger side exhaust. And this gets me thinking......when I was doing the water pipe and the upper timing case gaskets, I opened only the driver side intake manifold and cleaned the vent pipes on that side only. I was able to change the passenger side timing cover without opening that side intake. Any way, we shall see tomorrow if cleaning both side stops the smoking....
By the way, in your case the smoking stopped immediately, it wasn't a gradual process, right? I will be doubly, utterly shocked if this fixes my smoking issue
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M. |
#13
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N62B48 smokes no more!
I'll definitely be replacing and cleaning those CCV parts identified by stiubhartach - many thanks for the pictures and further info.
But for now though, my smoking issue seems to have been cured by a process of trial and error, using quantities of gradually thicker oils in sequence, as follows: 1) pre-insp. II - no smoke evident 2) post-insp. II and fresh Castrol Edge 5W-30 full synthetic oil - big clouds of blue smoke after extended idle 3) drained out 4L of oil and replaced with 4L of Shell 5W-40 full synthetic - still moderate smoke after extended idle, maybe a little less than before 4) drained out 5L of oil and topped up with 5L of Penrite 10W-50 full synthetic oil - no more smoke! I now plan to run the engine on this cocktail for 5,000 km/3,000 miles, then dump it and refill with 8L of fresh Castrol Edge 5W-40 Titanium, full synthetic. Will report back the results.
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Current: 2004 X5 4.8is - Le Mans blue/Cream beige 1994 E31 850CSi - Sterlingsilber Previous: 1987 BMW E28 M5 - Delphin-metallic 1976 BMW E3 3.0Si - Arctic-metallic |
#14
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My smoking problem ended immediately after the repairs.
If you are unsure where the smoke is coming from, you can check the intake manifold or CCV hose for oil. Here's some links. Oil in CCV hoses after replacing CCV - E46Fanatics Can I use this (Oil Catch Tank) with the ESS TS ? - Page 10 - E46Fanatics
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2005 X5 4.4i SterlingGrau, Sport Package, DSP Build 3/12/2005 |
#15
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2005 X5 4.4i SterlingGrau, Sport Package, DSP Build 3/12/2005 |
#16
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Thanks for this information. I will be cleaning my oil passages and changing diaphragms as a result. I always thought this was VVS, but I never have smoke on startup... so I've got my fingers crossed this will sort it.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#17
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Both pipes, pcv and pcv surfaces were generally clean ... I got a sinking feeling in the pit of me wallet
I chatted with my indy and asked him how come there's no smoke at startup if the valve stem seals are leaking. He says when the engine is off there's no vacuum, the leak occurs only under high vacuum conditions. Is this explanation plausible?
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M. |
#18
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Quote:
Have you considered trying the thicker oil solution?
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Current: 2004 X5 4.8is - Le Mans blue/Cream beige 1994 E31 850CSi - Sterlingsilber Previous: 1987 BMW E28 M5 - Delphin-metallic 1976 BMW E3 3.0Si - Arctic-metallic |
#19
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At WOT (wide open throttle) there is very little manifold vacuum. At idle because the throttle plate is close and there is just a tiny gap for air to pass through, the vacuum is High. Don't believe this, connect a vacuum gauge at an manifold inlet such as the brake booster and see the vacuum at idle and the vacuum when the throttle is opened.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#20
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I would be very surprised if a valve stem seals were leaking enough under vacuum to show visible smoke, but not leaking while the engine is off. Did you try pouring oil into the return passage and watching flow down? That's a hard place to clean.
This I some basics on valve seals: Automotive Valve Seals: Symptoms Smoke at Startup This is great post on the CCV system in the n62. Specifically post 18 has some more tests. http://www.bimmerforums.com/forum/sh...8#post25763768
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2005 X5 4.4i SterlingGrau, Sport Package, DSP Build 3/12/2005 |
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ccv, ccv oil separator, smoking |
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